Teranesia

7

The flight from Toronto touched down in Los Angeles and Honolulu before terminating in Sydney. Prabir changed planes for Darwin without leaving the airport. Choosing this route over Tokyo and Manila had been purely a matter of schedules and ticket prices, but as the red earth below gave way to verdant pasture and great mirrors of water, it was impossible not to dwell upon how close he was coming to retracing his steps away from the island. The boat full of refugees from Yamdena had landed in Darwin, and he and Madhusree had been flown back there from Exmouth before finally leaving the country via Sydney. The more he thought about it, the more he wished he’d gone out of his way to avoid these signposts; the last thing he wanted to do was descend systematically through the layers of his past, as if he was indulging in some kind of deliberate act of regression. He should have swooped down from Toronto by an unfamiliar route, and arrived in Ambon feeling as much like a stranger as possible.

He stepped out of the terminal at Darwin into a blast of tropical heat and humidity. It was barely half an hour later, local time, than it had been in Toronto when he left; even with three stops along the way, he’d almost kept pace with the turning of the Earth. The sky was full of threatening clouds, which seemed to spread the glare of the afternoon sun rather than diminish it. February was the middle of the wet season here, as it was in most of the former Indonesia, but Madhusree’s expedition wasn’t mistimed; in the Moluccas the pattern of the monsoon winds was reversed, and there it would be musim teduh, the calm season, the season for travel.

The flight to Ambon left the next morning. Prabir slung his backpack over his shoulders and started walking, ignoring the bus that was waiting to take passengers into the city centre. Once he checked into the hotel he’d probably fall asleep immediately, but if he could hold off until early evening he’d be able to start the next day refreshed and in synch. With six hours to kill and no interest in window shopping, the simplest method he could think of to stave off boredom would be to wander through the city on foot. His notepad had already acquired a local street map, so he was in no danger of getting lost.

He headed north out of the airport precinct, past playing fields and a cemetery, into a stretch of calm green tropical suburbia. At first he felt self-conscious when he passed other pedestrians—the size of his backpack marked him clearly as a tourist—but no one gave him a second glance. It felt good to stretch his legs; the pack wasn’t heavy, and even the surreal heat was more of a novelty than a hardship.

There was nothing on these serene, palm-lined streets to remind him of the detention camp two thousand kilometres away, but as he passed what looked like the grounds of a boarding school, he recalled his parents discussing the possibility of sending him to Darwin to study. If they’d had their way, he might have sat out the war here. So why hadn’t he? Had he dissuaded them somehow? Thrown some kind of tantrum? He couldn’t remember.

The afternoon downpour began, but the trees along the verge gave plenty of cover and his pack was waterproof. He kept walking north, away from the hotel. The earthy smell of the air as it rained made him ache with a kind of frustrated nostalgia: he couldn’t decide whether the scent of the storm reminded him of Calcutta, the island, or just Darwin itself.

The answer came a few minutes later, when the road ended at a hospital. He stood in the rain, staring at the entrance. He would never have recognised the building by sight alone, but he knew that he’d been here before.

His mother had been in labour for eight or nine hours, starting late at night. He’d been put to bed somewhere far enough away from the delivery room that he couldn’t hear a sound, and he’d fallen asleep assuming—with a mixture of resentment and gratitude—that he’d miss out on everything. But in the morning his father had woken him and asked, ‘Do you want to see your sister being born?’

While the violence of the birth itself had unnerved him, even his mother’s suffering hadn’t been able to distract him entirely from the strangest part of what he was witnessing. Two cells that might as easily have been shed from his parents’ bodies like flakes of skin had instead succeeded in growing into an entirely new human being. That they’d done this deep inside his mother was clearly of no small consequence to her, but what struck Prabir even more forcefully than the realisation that he’d emerged in the same dramatic fashion himself was the understanding that he too had been built from nothing but air and food and ancestry, just as this child had been built, month by month back on the island, right before his eyes.

He’d long ago accepted his parents’ account of his own growth. He was not at all like a child-shaped balloon, merely swelling up with food; rather, he grew the way a city grew, with buildings and streets endlessly torn apart and reconstructed. A vast collection of templates inside him was used to assemble, from the smallest fragments of each digested meal, the molecules needed to repair and rebuild and extend every part of his body. Great fleets of microscopic couriers rode crystalline scaffolding, swam rivers thicker than treacle, and negotiated guarded portals to carry the new material to the places where it was needed.

All of this was astonishing and unsettling enough, but he’d always shied away from pursuing it to its logical conclusion. Only once Madhusree had emerged, staring uncomprehendingly into a room full of faces and lights that he knew she’d never remember, had Prabir finally seen beyond the vanishing point of his own memories. The thing he knew first-hand about her was equally true of himself: he had once not existed at all. He’d been air and water, crops and fertiliser, a mist of anonymous atoms spread across India, across the whole planet. Even the genes that had been used to build him had been kept apart until the last moment, like the torn halves of a pirate’s map of an island yet to be created.

While his mother cradled the child in her arms, his father had knelt by the bed, kissing them both, laughing and sobbing, delirious with happiness. Prabir had been relieved that his mother was no longer in agony, and quite smitten with his newborn sister, but that hadn’t stopped him from wondering what she’d actually done to deserve all this adoration. Nothing he hadn’t done himself. And that would always be true: however precocious she turned out to be, he’d had too much of a head start to be overtaken. His position was unassailable.

Unless he was working from the wrong assumptions. He’d always imagined that he’d somehow earned his parents’ love, but what if his sister’s reception was proof that you began life not with a blank slate, devoid of either merit or blame, but with a kind of unblemished record that could only be marred? In that case, the best he could hope for would be to slip no further while he waited for her to fall as far.

He’d felt ashamed of these thoughts immediately, and though that wasn’t enough to quash his jealousy, he’d resolved, there and then, never to take it out on Madhusree. If his parents continued to favour her—once the understandable fog of emotions brought on by the birth itself had cleared—then that would be their fault entirely. It was obvious that she’d played no part in it.

Nineteen and a half years later, Prabir wasn’t sure that any of these thoughts really had run through his head in the delivery room. He didn’t trust memories of sudden revelations or resolutions; it seemed more likely that he’d reached the same conclusions over a period of months, then grafted them on to his memories of the birth. Still, it made him cringe to think that he could have been so calculating and smug, however absurd it was to judge himself in retrospect by adult standards. And in one sense he couldn’t even claim to have advanced much beyond that child’s perspective: he still couldn’t untangle the reasons for his parents’ love.

On one level it seemed utterly unmysterious: caring for your children was as indispensable as every other drive for reproduction or survival. It might be a struggle to raise a family, the way it was a struggle to gather food or find a mate, but the end result was as unequivocally satisfying as eating or fucking, as self-evidently right as breathing.

The only trouble was, this was bullshit. Even writing off as aberrations the vast number of parents who never came close to that ideal, no one’s love was unconditional. Children could gain or lose favour through their actions, just like any stranger. Had the possibility of rejection itself been fine-tuned by natural selection, to improve the child’s prospects of survival by instilling a suitably pragmatic moral code? Or was it all a thousand times subtler than that? Human parents weren’t bundles of twitching reflexes; they agonised over every decision. And yet, you could reflect and reason all you liked, mapping out an elaborate web of consequences that might not have occurred to you if you’d acted in haste, but in the end you still had to decide what was right, and the touchstone for that was as primal as it was for any gut feeling.

Felix would have told him that none of this mattered—however fascinating it was, scientifically. In the end we were what we were, and it made no difference how we’d got there. But that wasn’t such an easy mantra to recite when you’d travelled halfway around the planet, with no clear idea why. Prabir had resigned himself to his inability to reason away the dread he felt at the thought of Madhusree setting foot on the island; whether or not it was out of all proportion to any real risk she faced, he couldn’t expect to shake off the past so lightly. But he wasn’t even sure what fear, or what drive, the fulcrum of Teranesia had rendered so powerful. Was he still trying to impress his dead parents with his dedication? He’d always relied on his memory of them for guidance—and their imagined approval had always been the one sure sign that he’d done something right—but he didn’t believe that he’d reduced Madhusree to a pawn in some game with the ghosts in his head. Still less could he accept that everything between them revolved around the obscure Mendelian fact that she was the only living person who could carry half his genes into the future. Madhusree wasn’t only his sister; she was his oldest friend and staunchest ally. Why wouldn’t he take a few weeks’ vacation from a job he hated to look out for her in a dangerous corner of the world?

Prabir turned away from the hospital and started back towards the city. However much he might have loved, admired and respected her if they’d met for the first time under Amita’s roof—if she’d been adopted from some other family entirely, but still chosen to flee that madhouse with him at the first opportunity—he was almost certain that he would never have been willing to follow her all the way to Teranesia.

Prabir had flown into Ambon once before, but he had no clear memory of the descent. This time, at least, it was startlingly apparent—as it had never been from sea level, approaching in the ferry—that the mist-shrouded island was actually a pair of distinct volcanic bodies, connected in geologically recent times by a narrow isthmus of silt. Ambon Harbour was the largest part of what had once been the strait between these two separate islands; if it had penetrated any deeper it would have come out the other side.

Pattimura Airport lay on the north-west shore of the harbour; Ambon City was ten kilometres due east. Prabir watched one speedboat crossing the water, overloaded with people and luggage, and decided to take the long way round.

Waiting on the highway for the bus, he felt self-conscious in a very different way than he had in Darwin; he was almost afraid that someone might recognise him and ask him to account for his long absence. That wasn’t very likely; the people they’d met here had been friendly enough, but with his broken Indonesian and the family’s infrequent visits, he’d never really had the chance to get to know anyone.

The trip around the harbour took almost an hour. The water looked much cleaner than he remembered; there’d usually been a plume of oil and floating garbage stretching out to surround the ferry before it had even entered the harbour.

He alighted in the city and set out for the hotel. The streets were cobblestone, recently refurbished, lined with tall palm trees at regular intervals; the whining scooters he remembered being everywhere had apparently been banished from the city centre. There were no billboards, and no intrusively modern signs on the shops; an almost uniform row of white stone façades shone in the sun. The whole thing was probably a calculated attempt to re-create the style of the Dutch colonial period for the tourists, most traces of the real thing having been comprehensively bombed into dust during World War II.

He’d never learnt his way around Ambon as a child, relying on his parents to shepherd him. He recognised none of the buildings he passed, and he had no real sense of where he was in relation to the shops and markets where they’d bought provisions. But the angle of the light, the scent of the air, were enough to evoke a discomforting sense of reconnection. He didn’t need to see the past re-created brick by brick to feel the tug of it inside him.

A small group of people in brightly coloured, formal-looking clothes stood at the edge of the main square, arms outstretched at their sides, eyes half closed, perspiring heavily, singing. Behind them, a sagging cardboard sign bore a few dozen words in Indonesian. Prabir was too tired to dredge his memory for an uncertain translation, and when he saw a citation at the bottom—book, chapter and verse—he decided not to bother fishing out his notepad for help.

Hordes of evangelical Christians from the US had descended on the region in the wake of the civil war, but they’d had far more success in West Papua, where even the current President had been converted to born-again psychosis. Prabir wasn’t sure why the Moluccans had proved so resistant this time round; they’d been a pushover for Spanish Catholicism, then chucked it all in for Dutch Protestantism—though that must have been at least partly a matter of trying to get along with whoever held the guns to their heads from year to year. Maybe the Americans hadn’t tried hard enough to conceal their phobia of Islam, which would not have gone down too well here. Relations between Christians and Muslims on Ambon had suffered almost irreparable damage in the early years of the post-Suharto chaos, with provocateur-led riots claiming hundreds of lives. A decade later, entire villages had been wiped out under cover of war. With independence, the government of the Republik Maluku Selatan had set about reviving a five-hundred-year-old tradition of alliances between Christian and Muslim villages; these pela alliances had once been famously successful at defusing inter-religious tensions, and still ran so deep on some outlying islands that Christians built mosques for their neighbours, Muslims built churches. The return of pela, with the opportunity it provided to write off the years of violence as an aberration, was probably the main reason the RMS hadn’t torn itself apart in an endless cycle of revenge killing.

Prabir was about to move on when he noticed the exhibit at the singers’ feet, largely obscured by the pedestrians passing in front of it. Some kind of animal had been inexpertly dissected, and the parts laid out on a stained canvas sheet. Reluctantly, he moved closer. The viscera and the separated bones meant nothing to him; the intended audience had probably had more experience with butchering animals, and would at least know what was meant to impress them. The skull looked like a small marsupial’s, a tree kangaroo or a cuscus. Some pieces of the hide were thickly furred; others were covered in shiny brown scales. But if the creature really had been some kind of astonishing chimera, why lessen the impact by cutting it up?

One of the evangelists opened her eyes and beamed at him. His clothes and backpack must have given him away as a foreigner; the woman addressed him in halting English. ‘End times, brother! End times upon us!’

Prabir replied apologetically, in Bengali, that he had absolutely no idea what she was talking about.

The desk clerk at the Amboina Hotel was far too polite to laugh when Prabir asked where he might hire a boat as cheaply as possible. The response—couched in the most diplomatic language—was that he could forget about the ‘cheap’ part and join the queue. Everyone who’d arrived in town for the last two months had been looking for a boat; it was a seller’s market.

This was a dispiriting start, but Prabir fought down the urge to retreat into pessimism. ‘There was a group of about twenty people who would have passed through Ambon three weeks ago. Scientists, on an expedition being mounted by some foreign universities. Have you heard anything about that?’ There were half a dozen other places they could have stayed, but he had nothing to lose by asking.

‘No. But we have many guests here from foreign universities.’

‘You mean, in general? Or in the hotel right now?’

The man glanced at his watch. ‘Mostly in the bar, right now.’

Prabir couldn’t believe his luck. They must have completed the first stage of their work and returned to base to recuperate. They could hardly have been stranded here all this time; they would have organised transport well in advance.

He sat in his room for forty minutes, trying to decide exactly what he’d say to Madhusree. How he’d explain his presence, what he’d propose they do. If he’d picked up his notepad and called her from Toronto, she would have talked him into staying there, but this was scarcely any better. He’d imagined tracking her down somewhere so remote that she couldn’t simply order him home, but here there was nothing to stop her. The next flight out of Ambon was never more than a day away.

He wouldn’t push his luck: he wouldn’t ask to be allowed to tag along with the expedition. He’d suggest that he stayed on in the hotel, so he could see her each time she came back into town. That wouldn’t embarrass her too much, surely?

The longer he thought about it, the more nervous he became. But it was no use trying to rehearse the whole encounter, writing scripts for both of them in his head. He’d go downstairs and face her, see how she reacted, and play it by ear.

The bar opened into a shaded courtyard; all the customers were out there catching the afternoon breeze. Prabir bought a syrupy fruit concoction whose contents defied translation; the bartender assured him that it was non-alcoholic, but that seemed to be based on the dubious assumption that the whole thing wouldn’t spontaneously ferment before his eyes, like an overripe mango. Prabir took one sip and changed his mind; the sugar concentration was high enough to kill any micro-organisms by sheer osmosis. He steeled himself and walked out into the courtyard.

He scanned the tables, but he couldn’t see Madhusree anywhere. There were only about thirty people in the courtyard; it didn’t take him long to convince himself that she was not among them.

Someone stretched a hand out to him. ‘Martin Lowe, Melbourne University.’ Prabir turned. Lowe was a middle-aged man, visibly sunburnt—not surprising if he’d been at sea for the past three weeks. There were two other men seated at the same table, intent on some kind of printout. He shook Lowe’s hand distractedly and introduced himself.

Lowe asked amiably, ‘Are you looking for someone?’

Prabir hesitated; he couldn’t announce his intentions baldly to one of Madhusree’s colleagues, before he’d even spoken to her. ‘Is the whole expedition staying here? In this hotel?’

‘Expedition? Ah. I think you’d better have a seat.’

Prabir complied. Lowe said, ‘You mean the biologists, don’t you? I’m afraid you’ve missed them; they left weeks ago. They took a boat and headed south.’

‘But I thought they were back.’ Prabir blinked at him, confused. He’d had nine hours’ sleep in Darwin, and woken at dawn feeling perfectly normal, but now jet-lag was catching up with him again. ‘I thought you said you were—’

‘You thought I was one of them? God, no!’ The older man seated opposite glanced up from his work. Lowe said, ‘Hunt, this is Prabir Suresh: he’s chasing the biologists, for some unfathomable reason. Hunter J. Cole, Georgetown University. And this is Mike Carpenter, one of his postdocs.’

Prabir leant across the table and shook hands with them. The desk clerk hadn’t been mistaken; the bar was full of foreign academics. But if the biologists hadn’t returned, who were these people?

‘You’re here to observe the Efflorescence?’ Cole wore a fixed, slightly self-effacing smile, as if he knew from long experience that it was only a matter of time before he said something devastatingly clever, and he was already basking graciously in Prabir’s anticipated response.

‘I suppose so. Though I hadn’t heard it called that before.’

‘My own terminology,’ Cole confessed, raising one hand dismissively as he spoke. ‘My Taxonomy of Eucatastrophe has not been widely read. And still less widely understood.’

Prabir was feeling increasingly disorientated. The title sounded as if it should have made sense to him—something to do with population ecology, maybe?—but the actual meaning eluded him completely.

‘Whatever terminology we choose to deploy,’ Lowe responded earnestly, ‘what we’re witnessing here is a classic manifestation of the Trickster archetype, taking gleeful pleasure in confounding the narrow expectations of evolutionary reductionism. After biding its time for almost two centuries, indigenous mythology has finally given rise to the ideal means of undermining the appropriations of Wallace. This meshes perfectly with my over-arching model of nature as “The Unruly Woman”: disruptively fecund; mischievously, subversively bountiful.’

Cole smiled contentedly. ‘That’s an interesting framework, Martin, but I find many aspects of it deeply problematic. The only safe assumption we can make at this point is that we’re moving into a Suspensive Zone, where normal logics and causalities are held in abeyance. To reify the disruptive impulse is to presuppose that every teleological trajectory implies an agent, and ultimately to misunderstand the entire dynamic of Wrongness.’

Prabir was experiencing severe déjà vu: Keith and Amita had had arguments like this, all Big Dumb Neologisms and thesaurus-driven bluster. It was like listening to two badly written computer programs trying to convince each other that they were sentient. He glanced hopefully at Cole’s student, Carpenter; surely his generation had regained some mild interest in reality, if only for the sake of rebelling against half a century of content-free gibberish.

Carpenter tipped his head admiringly towards his mentor. ‘What he said.’

The rest of the courtyard had fallen silent. Prabir looked around to see what had caught their attention. A huge black bird, fifty or sixty centimetres tall, had landed on one of the unused tables, and was sitting with its back to him, preening its feathers. Though it was dark as a raven, it was unmistakably a species of cockatoo, with a slender, almost thread-like crest. He’d seen them on the island now and then, but never in the metropolitan heart of Ambon. Maybe this was a sign that the city really had brought its pollution levels under control.

The bird turned its head to peck at its shoulder, revealing a row of sharp brown teeth embedded in the lip of its beak.

Prabir felt a small, hot trickle of urine flow across one leg. Mercifully, he’d emptied his bladder half an hour ago; there was almost nothing to soil his clothes. He glanced at Lowe, who was staring at the creature with a glazed expression. No one in the courtyard was moving or speaking. The bird emitted a brief raucous cry, then began grooming under one wing.

‘You’re a fine boy, aren’t you? You’re my beautiful boy!’ A woman had risen from one of the tables; she approached the bird slowly, crooning to it softly, circling around it to get a better view. Prabir watched her, horrified at first, then impressed by her presence of mind. The thing was still a cockatoo, after all, not some taloned bird of prey. As a child he’d been entirely unafraid of its equally imposing cousins, and the teeth scarcely added to the kind of damage its beak could have inflicted anyway.

The woman announced, to no one in particular, ‘I can see no sign of reversal of normal fusion in the vertebrae of the pygostyle. No vestigial claws on the wing tips. Naive to look for these things, I suppose, but whose instincts wouldn’t tell them to cherchez la theropod?’ Prabir found it hard to judge whether her speech was slurred—she spoke with a strong Welsh accent for which his ear was not well calibrated—but her movements seemed a bit uncoordinated.

She made a grab for the bird’s legs. It squawked and ascended half a metre, then came down on the table again, lunging at her. Prabir rose to his feet, but he was too far away to help. The bird sank its teeth into the woman’s forearm, shook its head vigorously to and fro half a dozen times, then opened its jaws and flew away.

‘Fuck. Fuck!’ She stared after it angrily, then glanced down at her wound. ‘Buccal fauna. Food residues. Saliva!’ She tipped her head back and laughed with delight, then dashed from the courtyard.

Prabir caught up with her outside the hotel. ‘Excuse me. I’m sorry. Can I talk to you for a second?’

The woman scowled at him. ‘What’s your problem? I’m in a hurry.’

‘I understand. I won’t slow you down; I can explain while we walk.’

She didn’t look too happy with this, but she nodded reluctantly. ‘It’s too crowded for me to run, and I don’t want to raise a sweat.’ Prabir thought it unwise to point out that this was a lost cause, unless she planned to conjure up an air-conditioned limousine in the next thirty seconds.

He said, ‘I’m hoping to get in touch with someone on the expedition. Do you think you’d be able to let me have a copy of the itinerary?’ She must have arrived late in Ambon, or succumbed to a temporary illness when the others were leaving. Since she hadn’t given up and gone home, she was presumably in the process of arranging to rejoin her colleagues. If he offered to split the cost, she might even let him hitch a ride.

She took a few seconds to make sense of his question. ‘You mean the university biologists? I’ve only been here six days; they left weeks ago.’

‘You’re not with them?’

‘Hardly. I’m freelance.’

‘You’ve had no contact with them at all?’

‘No.’ She turned to face Prabir, without slowing her pace. ‘Can’t you just call whoever it is? There’s no reason for them to be having reception problems.’

‘It’s my sister. And no, I can’t call her.’ He added defensively, ‘It’s complicated.’

The woman shrugged; this was none of her business. ‘I’m sorry. But I really don’t know where they’ve gone.’

Prabir was bitterly disappointed, but he struggled to regain some perspective. Before he’d checked into the hotel he hadn’t expected to learn anything useful for days.

He said, ‘Well, good luck with the saliva. I can’t think what possessed you to walk into a bar without a sequencer on you.’

She laughed. ‘There’s no excuse, is there? I carry a camera about the same size, and I didn’t even think to use it. The sequencer would have been a thousand times more valuable… but no, I had to leave it on the boat.’

Prabir didn’t bother to conceal his amazement. ‘You have a boat? And you’re still here after six days?’

‘Don’t get me started.’ She regarded him darkly. ‘I gave myself three days to buy provisions and hire a guide. But everyone I speak to wants to drag all their friends and family into the deal: no guide without hiring a whole crew.’

‘You have a crew already?’

She rolled her eyes. ‘It’s a brand-new MHD craft, not a prahu with sails and masts and rigging. There’d be nothing for a crew to do, except fish and sunbathe at my expense. I brought it here from Sulawesi; I can handle it perfectly on my own. I put myself through a doctorate in Aberdeen working part-time on a North Sea fishing trawler. This whole place looks like a millpond to me.’

Prabir wondered if it had occurred to her that not everyone in Ambon necessarily doubted her seacraft, or was intent on ripping her off. Most men here would consider it inappropriate to be alone on a boat with a foreign woman, and not many women would be willing to take on the job at all. The simplest thing to do would be to reconcile herself to the need to hire as many hangers-on as decorum required.

There was one cheaper alternative, though.

He said, ‘If you could cope with the North Sea, I’d trust you here any day. And I grew up in these islands.’

‘You did?’

He nodded calmly, planning to lie by omission only. ‘I was born in Calcutta, but my family moved here when I was six. I live in Canada now, but I still think of this as—’ He trailed off, unable to say it, though a few more honest alternatives came to mind.

They were almost at the harbour. She stopped walking, and offered him her hand.

‘I’m Martha Grant.’

‘Prabir Suresh.’

She held up her forearm and inspected the wound, then announced glumly, ‘I’m sweating like a pig. I won’t find a thing; it’ll all be washed away or degraded by now.’

A vivid red weal had spread along her arm. Prabir said, ‘Forget about DNA. Drown the whole area in disinfectant, and take whatever antibiotics you can get your hands on. You should have seen what happened to my mother’s leg once from an insect bite. You don’t want to take any chances.’

‘Yeah.’ Grant rubbed her eyes, and smiled at him ruefully. ‘What a farce. That bird just flew down to me, like a gift, and I didn’t even get an image of it.’

Prabir gave up on the idea of waiting to be asked. He said, ‘If you want a guide, I’ll do it for nothing. I’ll even pay for my own food. The only down side is, I might have to leave you at some point to meet up with my sister. But you’ve got maps, you’ve got translation software. It’s not as if you’d be lost without me.’ It was hard saying the last part with a straight face; he’d be relying on maps and software himself. But he wasn’t seeking money under false pretences, or endangering this woman’s life. She was the one whose skills would have the most bearing on their safety.

Grant regarded him with a mixture of sympathy and scepticism. ‘Wouldn’t it be easier just to call your sister? I can’t guarantee that we’ll even get close to the expedition.’

That was true. But though Madhusree had promised him that she wouldn’t disclose anything about their parents’ work, Prabir had no doubt that she’d still do her best to steer the expedition in the right direction. If he could do the same, not only would that lead him to Madhusree, but he’d end up being far more use to Grant than the most experienced guide Ambon had to offer.

He shrugged. ‘I’m willing to take that risk. I mean, it’s not as if I have much hope of reaching her any other way.’

Grant still seemed to be uneasy about something. Prabir said, ‘You don’t have to decide right away. Think it over. Sleep on it.’ He reached for his notepad to give her his number.

She said, ‘Can you tell me why your sister doesn’t want you to find her?’

Prabir gave her a long, hard look, trying to decide how to take this. What exactly did you have in mind, memsahib? You think I’ve come to drag her off to an arranged marriage? Doing my bit for the international conspiracy to throw all women into purdah? That was unfair, though. Grant didn’t know the first thing about him; she didn’t need to be a racist to have qualms about helping him pursue an unwilling quarry.

He tried to think of a way to put her at ease. ‘Do you have any children?’

‘Yes. I have a son.’

‘How old is he?’

‘Fourteen.’

‘Where is he now?’

‘At home with his father, in Cardiff.’

‘Suppose he was camping out in the countryside with friends, and you saw the weather changing, but you knew he wouldn’t understand what that meant in the same way you did. How do you think he’d react if you called him up and suggested that you join him at the campsite, just to keep an eye on things? Just to give him the benefit of your experience?’

Grant said gently, ‘OK, I get the point. But why do you think the weather’s changing? Why are you so afraid for her?’

‘I don’t know,’ Prabir confessed. ‘I’m probably wrong. I’m probably mistaken. But that doesn’t change the way I feel.’

Grant did not appear entirely reassured by this answer. But there was no obvious next question, no simple way to pursue the matter. Finally she said, ‘All right, I’ll stop prying. Meet me here tomorrow at eight, and I’ll show you the boat.’

8

At dinner, Prabir managed to avoid Lowe and company, but he found himself sharing a table with Paul Sutton, an English science journalist who’d come to write a book about the Moluccan mutants. These were proof, Sutton insisted, of a ‘cosmic imperative for biodiversity built into the laws of physics’ which was compensating for the loss of species caused by human activities. The distinctly non-random nature of the mutations showed that ‘the nineteenth-century science of entropy’ had finally been overtaken by ‘the twenty-first-century science of ecotropy’.

‘I just can’t decide on the title,’ he fretted. ‘It’s the title that will sell it. Which do you think sounds best: The Genesis Gene, The Eighth Day of Creation, or The Seventh Miracle?’

Prabir mulled it over. ‘How about God’s Third Testicle?’ That summed up the book’s three themes concisely: religiosity, superabundance, and enormous bollocks.

Sutton seemed quite taken by this, but then he shook his head regretfully. ‘I want to evoke a separate act of creation, but that’s a bit too… genitally focused.’ He stared into the distance, frowning intently. Suddenly his eyes lit up. ‘Gaia’s Bastards. That’s it! That’s perfect! Ecology with an edge. Nature breaking all the rules, walking on the wild side to keep the Earth in balance! It’s got best-seller written all over it!’

In the morning Prabir met Grant, and they walked down to the marina where her boat was docked. It was a twenty-metre magnetohydrodynamic craft, with a single large cabin sunk partly below deck. Most of the cabin space was taken up with equipment; Grant showed him the bunk where he’d be sleeping, in a narrow slot behind a row of storage lockers. ‘You won’t have much privacy, I’m afraid. You can see why I didn’t want six deckhands and a cook on board.’

‘Yeah. I was expecting to travel in crowded conditions, though. This is one step up from my wildest dreams of luxury.’ He turned away from his ‘quarters’ and eyed a rack full of spectrometers and chromatographs; there was a whole analytical chemistry lab packed on to half a dozen chips here. ‘I have no idea what a freelance biologist does, but it must pay well.’

Grant made an amused choking sound. ‘I don’t own any of this; it’s all on loan from my sponsor.’

‘Can I ask who that is?’

‘A pharmaceuticals company.’

‘And what do they get out of it?’

‘That remains to be seen. But there’s no such thing as a useless discovery in molecular biology. At the very least they can always play pass-the-patents, so someone else is left holding them when it finally becomes obvious that they have no commercial value whatsoever.’

They sat on the deck and talked for a while, looking out across the harbour. It was humid, but still quite cool; the fishing boats had all left long ago, and the marina was almost deserted. When Grant asked about his childhood Prabir spoke of the family’s rare trips to Ambon, and tried to create the impression, without actually lying, that they’d travelled all over the region. But when she came right out and asked him what his parents had done, he said they’d been involved in seafood exports.

‘So they made a fortune and retired to Toronto?’

‘No. They both died here.’

‘I’m sorry.’ She quickly changed the subject. ‘Do you have anything you want to ask me? Before you decide to trust me not to run us into the nearest reef?’

Prabir hesitated, wary of offending her. ‘Do you use alcohol much?’

Grant was scandalised. ‘Not at sea!’

Prabir smiled. ‘No, of course not. How could I forget the long nautical tradition of sobriety?’

‘There is one, actually. Dating back to the Industrial Health and Safety Laws of nineteen… something-or-other.’ She was treating it as a joke, but she did seem slightly wounded. ‘Was I very drunk yesterday?’

Prabir replied diplomatically, ‘You were a lot more lucid than anyone else in the bar.’

Grant stood up abruptly, stretching her shoulders. ‘Well, you have a deal, if you’re still interested. And if you’re willing to do the cooking, you can forget about paying for food.’

‘That sounds fair.’ He rose to his feet beside her.

‘When would you be able to leave?’

‘Whenever you like. I just have to get my things and check out of the hotel.’

‘If you can be back in an hour, we can go this morning.’

‘An hour?’ Prabir was taken aback, but he had no reason to object. ‘OK. I’d better get moving then.’ He raised a hand in farewell and headed for the pier.

Grant called after him, ‘See you soon.’

Replaying parts of their conversation in his head as he walked along the marina, Prabir felt a belated sense of panic. If he’d hitched a ride on a crowded fishing boat, he could have sat in a corner and disappeared amidst the bustle, wrapped in the shield of his imperfect Indonesian. He and Grant could be stuck with each other’s company for weeks, and there’d be no easy way to retreat into silence.

But this was the best opportunity he’d have of reaching Madhusree. And Grant would have far more important things to do than probe his story every waking moment. They’d probably get on well enough, but he could still keep her at arm’s length. He’d worked harmoniously for nearly ten years with people at the bank to whom he’d never said a word about the war, or his parents, or the island. He really had nothing to fear.

Before checking out of the hotel, Prabir sat on his bed and called Felix. It was eight p.m. in Toronto, but he decided to leave a message rather than talking live. He’d promised to keep Felix informed of his plans, but the prospect of exchanging small talk held no attraction for him. They were twenty thousand kilometres apart, he was on his own, and he didn’t want to forget that for a second.

Back at the marina, Grant was in high spirits, eager to depart after being delayed for so long. Prabir threw his backpack under his bunk and watched over her shoulder as she programmed the boat.

Ambon Harbour was as automated as any airport. Grant lodged a request for a southbound route into the Banda Sea, and the Harbour Master’s software fed it to the autopilot. The engines started up, with a sound like water flowing through plumbing, and they began backing out of the dock immediately. There were several large cargo ships moored further along the wharves, but there was no traffic in sight other than the tiny water taxis and a few pleasure craft.

It was ten kilometres to the harbour entrance, and the speed limit made it a leisurely trip. Grant had pointed out the visible parts of the boat’s machinery earlier, but at Prabir’s request she summoned up schematics on the console and had the software deliver its full technospiel.

The boat’s fuel cells doubled as batteries which could be charged either by solar electricity, from the deck and cabin roof, or by pouring in methanol which was split into water and carbon dioxide. A single elaborate polymer contained both catalytic sites which ‘burnt’ the methanol, and embedded vanadium ions which stored and released the energy by toggling between oxidation states. All the chemicals involved were bound firmly in place; the water emerged pure enough to drink.

The engines were polymer too, corrosion-resistant electrodes and superconducting coils that accelerated sea water through any of the six channels that ran through a streamlined hub on the underside of the hull. With no moving parts, the only routine problem the engines could suffer was seaweed fouling the sieve-like filters guarding the channels, and even that was usually cleared automatically with a few pulses of reverse thrust.

Prabir said, ‘This is elegant. This is how a boat should be.’

Grant appeared noncommittal. ‘You don’t long for the romance of sail?’

‘Ha. Did you ever long to spend your time fighting ropes and canvas in the middle of a storm on the North Sea?’

Grant smiled. ‘No, but—’ She gestured at the cloudless blue sky. ‘As a boy, you must have been on prahus all the time.’

He shook his head. ‘Everything was diesel. We never lived in the kind of small villages where people built their own traditional fishing boats.’ He wasn’t even lying, but as soon as he began talking about the past he could feel muscles in his face growing tense from the effort of concealment.

‘Well, MHD certainly outclasses diesel,’ Grant conceded. ‘Though I wouldn’t use the word “elegant” myself. On that score, an eel leaves a boat like this for dead.’ She leant back against the bench beside the console; she was teasing him, but Prabir couldn’t resist the bait.

He said, ‘That’s professional bias talking. An eel isn’t optimised for swimming, just because it’s done no better for the past few million years. It fritters away half its energy on just being alive: every cell in its body needs to be fed, whether or not it’s working. Like the crew you didn’t want to hire. Evolution does a lot of things very nicely: shark skin minimises turbulence, crustacean shells are strong for their weight. But we can always do better by copying those tricks and refining them, single-mindedly. For a living creature, everything like that is just a means to an end. Show me an eel without gonads, and then I’ll concede that nature builds the perfect swimming machine.’

Grant laughed, but she admitted begrudgingly, ‘You’re right, in a sense: it costs us a lot of energy to build each new boat, but it’s still convenient to segregate that from ordinary fuel use. I wouldn’t want to travel in a pregnant ship, let alone one that had to prove itself to prospective mates in a ramming contest. And even marine engineers can get by without children; they just need good designs that will propagate memetically. But none of this is truly divorced from biology, is it? Someone, somewhere has to survive and have offspring, or who inherits the designs, and improves upon them, and builds the next boat?’

‘Obviously. All I’m saying is, technology can potentially do better than nature because of the very fact that it’s not always a matter of life or death. If an organism has been fine-tuned to maximise its overall reproductive success, that’s not the same thing as embodying the ideal solution to every individual problem it faces. Evolution appears inventive to us because it’s had time to try so many possibilities, but it has no margin at all for real risks, let alone anything truly whimsical. We can celebrate our own beautiful mistakes. All evolution can do is murder them.’

Grant gave him a curious look, as if she was wondering what kind of nerve she might have touched. She said, ‘I don’t think we really disagree. I suppose I’m just ready to take beauty where I can find it. The average mammalian genome would make the ink-stained notebooks of a syphilitic eighteenth-century poet look positively coherent in comparison: all the layers of recycled genes, and redundant genes, and duplicated genes that have gone divergent ways. But when I see how it manages to work in spite of that—every convoluted regulatory pathway fitting together seamlessly—it still makes hair stand up on the back of my neck.’

Prabir protested, ‘But if the pathways didn’t fit together, they wouldn’t be there for you to study, would they? Would you marvel the same way at the botched job in the thirty per cent of human embryos that have too much chromosomal damage even to implant in the uterine wall? Every survivor has a complicated history that makes it look miraculous. My idea of beauty has nothing to do with survival: of all the things evolution has created, the ones I value most are the ones it could just as easily crush out of existence the next time it rolls over in its sleep. If I see something I admire in nature, I want to take it and run: copy it, improve upon it, make it my own. Because I’m the one who values it for its own sake. Nature doesn’t give a fuck.’

Grant said reasonably, ‘Evolution takes a long time to roll over in its sleep. I’m a lot more worried that the things I admire are going to get crushed out of existence by people who don’t give a fuck.’

‘Yeah.’ There was no arguing with that. Prabir felt foolish; he’d let himself rant. He said, ‘I could make lunch now, if you’re as hungry as I am. What do you think?’

The sight of the open sea made Prabir feel strangely calm. It wasn’t that it brought back fewer, or less painful memories than Darwin or Ambon; quite the reverse. But there was something almost reassuring about finally making literal the state he’d imagined himself in for so long. He’d never reached the destination he’d promised Madhusree: the island where their parents were waiting. After eighteen years he still hadn’t struck land.

Grant joined him on the deck, beaming madly. She must have caught a trace of bemusement on his face; she said, ‘I know, but I can’t help it. A sky like this makes my poor heart sing. Sunlight deprivation as a child, I suppose; when I finally get a good dose of it, my brain just wants to condition me to come back for more.’

Prabir said, ‘Don’t apologise for being happy.’ He hesitated, then added obliquely, ‘Everyone else I met in Ambon who’d arrived from temperate regions seemed to have suffered rather less beneficial effects.’

Grant feigned puzzlement. ‘I can’t think who you could mean. Mind you, some people really do go a bit psychotic when they hit the tropics for the first time. That’s the down side. But you must have encountered that before, surely?’

‘The British Raj was a bit before my time.’

Grant smiled, then closed her eyes and raised her face to the sky. Prabir glanced back towards Ambon, but the grey smudge on the horizon had vanished. He’d have happily stood in silence like this for hours, but that was too much to hope for; what he really needed was a topic of conversation that wouldn’t keep leading them back to his supposedly boundless familiarity with everything in sight. Grant was hardly going to throw him overboard if she caught him out on some minor inconsistency, but if the whole mess of half-truths unravelled and he was forced to confess just how limited and rusty his grasp of the region’s language, custom and geography really was, he wouldn’t put it past her to abandon him on the nearest inhabited island.

He said, ‘What do you think’s going on here? With the animals?’

‘I have absolutely no idea.’

Prabir laughed. ‘That’s refreshing.’

‘I do have a few vague hypotheses,’ Grant admitted, opening her eyes. ‘But nothing I’d reveal except under extreme duress.’

‘Oh, come on! You’re not talking to a fellow biologist here. I’m much too ill informed to recognise heresy, and my opinion has no bearing on your reputation anyway. What have you got to lose?’

Grant smiled and leant on the railing. ‘You might blab to your sister, and then where would I be?’

Prabir was affronted. ‘Madhusree can keep a secret.’

‘Ha! Her, not you! That shows how far I can trust you.’

Prabir said, ‘What if some kind of toxin, some kind of mutagenic poison had been dumped on one of the uninhabited islands here, decades ago? A few dozen drums of industrial waste, chemically related to the kind of stuff they use to induce mutations in fruit flies?’ It seemed far-fetched that anyone would go to the trouble of doing that, rather than just dumping it at sea, but it wasn’t impossible. He wouldn’t necessarily have stumbled across the site; he hadn’t explored every last crevice on the island. The shift from the butterflies to all the other species could be due to a dramatic change in exposure levels: the drums might have split open after a few more years of weathering, or the land where they were buried might have subsided in a storm. Or maybe the poison had simply worked its way up the food chain. ‘The successful mutants thrive and breed, and some of the healthiest ones manage to cross to other islands. The only reason we’re not seeing any unfavourable mutations is because the afflicted animals are dying on the spot.’

Grant regarded him with undisguised irritation; she seemed genuinely reluctant to be drawn on the subject. But she wasn’t prepared to let this scenario go unchallenged. ‘Maybe you could explain the sheer number of genetic changes with a strong enough chemical mutagen, but the pattern still doesn’t make sense. Given everything else we’ve seen, some proportion of the animals who escaped from this hypothetical island should have had at least a couple of neutral alterations: changes to their anatomy or biochemistry that wouldn’t kill them or significantly disadvantage them, but which served no useful function at all. So far no one’s seen anything of the kind.’

‘Yes, but even the most “insignificant” disadvantage could be serious dead weight if you have to travel hundreds of kilometres just to be noticed. Maybe we’re only seeing mutants with changes that have been positively beneficial. I mean, you’d have to be pretty fit to fly all the way to Ambon from any of the remote islands in the south.’

Grant gave him an odd look. ‘They found a mutant tree frog in Ceram. That couldn’t have come from too far south—assuming it wasn’t hatched on the spot, which it might well have been.’ Ceram was a large island just ten kilometres north of Ambon. It was heavily populated around the coast, and parts of the interior had been logged and mined, but a considerable amount of rainforest remained intact. If Grant got it into her head to veer north and start traipsing through the jungles of Ceram, he’d never get anywhere near Madhusree’s expedition.

‘There are ferries running between the major islands,’ Prabir reminded her. ‘Something like a tree frog could have hidden in a crate of fruit, or even got on board a plane. Human transport can always complicate things to some degree.’

‘That’s true. But what makes you so sure that these animals have travelled at all?’

Prabir thought carefully before replying. Even if he’d known nothing about Teranesia, wouldn’t it be reasonable to suppose that there was an epicentre somewhere? He said, ‘If they haven’t, their parents or grandparents must have. If you follow the mutations back to their source, every animal must have had at least one ancestor exposed to the same mutagen at some point. I mean, whatever the cause, isn’t it stretching things to think that the same conditions could be repeated in half a dozen different locations?’

Grant shrugged. ‘You’re probably right.’ But she didn’t sound as if she meant it.

Prabir tried to read her face. If the animals weren’t travelling, what was? Any chemical spill severe enough to retain its potency across thousands of square kilometres could hardly have gone undetected this long. A hushed-up nuclear accident was even less plausible.

He said, ‘You think it’s a virus? But if it’s spreading all over the Moluccas, doesn’t that make it a thousand times harder to explain why we’re not seeing any unhealthy mutants? And isn’t it a bit far-fetched to think that it could infect so many different species?’

Grant gave him her sphinx impression. Prabir folded his arms and glowered at her. He wasn’t just killing time now: he was genuinely curious. He’d kept pushing the question aside as a distraction, but what Felix had called his cover story wasn’t entirely false: this was Radha and Rajendra’s life’s work, and part of him really did want to know what they would have discovered if they’d had the chance to complete it.

He said, ‘Unless the two mysteries are one and the same? Unless whatever makes the animals so impossibly successful makes the virus successful too?’

Grant said firmly, ‘We’ll gather some data, and we’ll see what we find. End of discussion. OK?’

Prabir lay on his bunk with his notepad’s headset on, brushing up on his Indonesian vocabulary. It was after midnight, but Grant was apparently still awake and busy. Most of the cabin was hidden from view by the row of lockers alongside the bunk, and the faint glow that diffused around them might have come from nothing but the phosphorescent exit sign, but whenever he took a break from his lessons he could hear the distinctive metallic squeaks of the ‘captain’s chair’. He had no idea what she was doing; with the collision avoidance radar and sonar switched on there was no pressing need for anyone to keep watch.

His concentration was faltering. He froze the audio and took off the headset. The humidity had become almost unbearable; the sleeping bag he was using as a mattress was soaked, and the air was so heavy that it felt as if he was drawing every breath through a straw. Maybe he’d be better off sleeping on deck, now that they were far enough out to sea not to worry about insects. The genetic quirk that had required him to be a walking mosquito killer as a child had no effect on the modern vaccine—another triumph for biotechnology, though when they reached some of the islands with undrained swamps he’d probably wish he still sweated repellent.

He rolled up his sleeping bag and headed for the cabin door. Grant was seated at the console, examining a chart of the Banda Sea stretching all the way down to Timor. Prabir explained what he was doing. ‘Is that OK with you?’

‘Yeah, of course. Go ahead.’ She turned back to the chart. Prabir wondered belatedly if he was eroding her privacy; the cabin windows had no blinds, so the two of them would no longer be as manifestly out of each other’s sight as when he’d been tucked away behind the lockers. But she hadn’t raised any objection, and once she switched off the console she’d be all but invisible anyway.

As he unrolled his sleeping bag on the deck, he tried to decide whether or not he owed it to Grant to tell her he was gay. On one level it seemed like an insult to both of them to suggest that it mattered; unless he’d misread her completely, she was the kind of person who’d start from the assumption that he wouldn’t try to exploit their situation, and she’d certainly shown no sign of wanting to exploit it herself. But he knew that his judgements were sometimes skewed; he was so accustomed to ruling out by fiat the whole idea of sex that he forgot that other people weren’t necessarily viewing him through the same filter. A few years after he’d started at the bank, he’d been assigned two graduate trainees to supervise while they were on a month’s rotation in his department: a man and a woman, both about his own age. He’d done his best to put them at ease, remembering how nervous he’d been in his own first weeks on the job, and as far as he could tell he’d been equally hospitable to both of them. But after they’d moved on, the news had got back to him that the woman had found his behaviour positively oppressive. He’d been too nice. He must have wanted something.

There was a gentle breeze moving across the water; for a minute or two Prabir was almost chilly, until his skin reached a kind of clammy equilibrium. The boat was pitching slightly as it crossed the waves, but that bothered him even less than it had in the confined space of the cabin.

He’d brought his notepad with him, but he was too tired to continue with the language lessons. He stared up at the equatorial sky, the sky he’d seen from the kampung at night: obsidian black, with stars between the stars. He could fix his eyes on one spot and try to map it, but his mind stopped taking in information long before he hit the limits of vision.

A few hours before he’d almost welcomed being back on the Banda Sea, but the connection seemed a thousand times more immediate now, the details of his memory sharper by starlight. He could feel the years melting away in the face of the accumulating evidence: the musical sound of the half-familiar language ringing in his ears, the struggle to sleep on a humid night. That was how memory worked, after all: placing like moments side by side. There was no linear tape inside his head, no date stamp on every mental image. It didn’t matter what had happened since. Nothing could stop the days and nights of eighteen years before becoming like yesterday.

He picked up his notepad and scrolled to the address book. Felix would be at work, but they could still talk for a few minutes. Though he’d never admit to it, he’d probably been offended that Prabir had only left a message when he’d called from the hotel. He’d probably welcome a civilised conversation to make up for the slight.

Prabir put down the notepad. He was sure it would work, he was sure it would help: watching the face of his lover in Toronto painted before him in a fine grid of light. That would banish the night terrors. But it still felt like the kind of crutch he didn’t want to lean on.

Prabir woke at dawn to the sight of Gunung Api, a black volcanic mountain rising out of verdant hills to tower over the Banda Islands. White mist—he hoped it was just mist—swirled around the peak. Gunung Api was still active, and though it hadn’t done serious harm for fifteen years, a recent report had said that clouds of hot gas and ash were being vented every month or so.

Api, Bandanaira and Lontar, the three main islands of the group, were about as close to each other as they could be without merging like Ambon’s Siamese twins. Lontar, to the south, was the largest, and Prabir could just make out the tips of it protruding on either side of the smaller northern pair.

He glanced towards the cabin. Grant didn’t seem to be up, so he urinated overboard to save disturbing her. He wondered if the boat would stop for him if he dived in for a swim to clear his head; the autopilot would certainly detect the event, but exactly how it responded would depend on the settings Grant had chosen. He decided not to risk it.

He sat on the deck and watched the volcano. Birdsong carried across the water, a faint, distorted version of the chorus that had woken him as a child. He laughed wearily. He’d sailed this sea before, he’d seen these stars before, he’d heard these birds before… but so what? Most people lived on in the very same town where their parents had died, some in the very same house. It was only because he’d left the whole country behind that it had come to seem so charged with significance. This was just a place like any other; it couldn’t drag him back into the past.

Grant emerged from the cabin and stood beside him, yawning and groggy, but smiling at the spectacle in front of them.

She said, ‘I don’t know about you, but quite frankly I stink. I’m going swimming.’

They sailed into the gently curved channel between Lontar and the other islands, past a moss-encrusted Dutch fort, towards the main town of Bandanaira. A vast coral garden lay beneath them, visible clearly through the water. Grant almost swooned with delight, crying out excitedly every now and then when she recognised yet another species of fish or sponge or anemone. Prabir stood beside her trying to be blasé; even if he couldn’t put a name to every one of these creatures, he had seen this all before, when the ferry had passed through on the way to Ambon. The Bandas had been a major tourist destination then, the harbour full of thirty-something Beijing honeymooners snorkelling and—rather more bafflingly, and a great deal less benignly—jet-skiing. But between the war, the 2016 eruption, and a number of subsequent minor earthquakes, the tourist industry seemed to have gone the way of the spice trade.

They found a mooring and set out into town. Apart from one abandoned modern hotel the buildings were in good repair, and Prabir felt no sense of poverty or decay; Bandanaira seemed to have shrunk back into obscurity gracefully. People moved unhurriedly on foot or on bicycles. The volcano loomed over the main street, barely three kilometres away; it was impossible to tell from here that it was on another island altogether.

After a while a swarm of children surrounded them: not beggars, just curious, exuberant kids, born long after the last tourists had departed. When they asked where the visitors were from, and Prabir said, ‘Canada and Wales,’ they dissolved into fits of laughter; maybe they were too young to have heard of either place and thought these were unlikely-sounding made-up names. When Prabir managed to get a question of his own in, the answer was disappointing but no great surprise: the biologists’ expedition hadn’t stopped here.

One of the older boys told him earnestly, ‘Your wife is very beautiful. Tell her she is very beautiful.’ Prabir translated the compliment but left out the presumption of matrimony. It had occurred to him back in Ambon that it might simplify things if they agreed to let people assume this as a matter of course, but he hadn’t had a chance to discuss it with Grant, and he didn’t want to argue the point in public.

Grant consulted her notepad and they turned down a side road. The children fell away. Prabir said, ‘Do you want to tell me where we’re going?’

‘Up into the nutmeg plantations.’

‘They’re hardly plantations any more. They’ve been abandoned for decades.’

‘Forests, plantations, call them what you like. We haven’t come here to negotiate a shipment of mace.’

Prabir couldn’t imagine what she was hoping to find; centuries of cultivation had left the islands with little in the way of wildlife. He’d assumed that they’d only dropped anchor here to ask the locals for news from travellers passing through from further south, or to scour the market for curiosities that might not have been shipped up to Ambon.

As they left the town behind, the dirt road became increasingly overgrown; they trudged through the heat, encountering no one. Grant had a licence from the government in Ambon to collect specimens for research purposes throughout the RMS, but Prabir suspected that they should still have asked for permission from the Bandanese themselves before heading out into the countryside. Under adat, customary law, all visitors to the island would be seen as guests of the raja—an honour that carried an obligation to inform him of their movements—but short of requesting an audience with His Whateverness, they might at least have checked with the nearest villagers that they wouldn’t be disturbing any ancestral shrines. The trouble was, if they went back into town so Prabir could sound people out about the correct protocol, Grant would soon realise that he was playing it by ear and start asking herself why she couldn’t have done the same without him.

The narrow, unkempt path that the road had become led them into the plantation, then abandoned them completely. They picked their way slowly through the undergrowth. Even at the height of the spice trade the plantations had never been a monoculture, and the tall, white-blossomed kanari almond trees interspersed with the nutmeg—planted to give shade to the saplings—seemed to have retained their share of the light long after the withdrawal of human intervention. It was the space between the trees that had reverted to jungle: rattan and lianas snaked from trunk to trunk, some of them unpleasantly spiked, and there were waist-high ferns everywhere. Prabir was glad he was in boots and jeans; he’d wandered Teranesia barefoot as a child, but his soft city feet wouldn’t have lasted five minutes here. Grant had gone so far as to wear a long-sleeved shirt, and after half an hour his own arms were so scratched that, despite the heat, he envied her.

He stopped to catch his breath. ‘If you tell me what you’re looking for, we might find it a little faster.’

‘Fruit pigeons,’ Grant replied curtly.

Prabir almost responded with an acerbic remark about the difficulty of doing field work with such limited powers of observation, but he stopped himself in time. Fruit pigeons might easily have been classed as vermin and hunted to extinction by the plantation owners, but they’d been spared for the sake of their convenient habit of shitting out the nutmeg seed, sowing it naturally. They weren’t exactly overwhelmed by competition or predators on any of the islands, but here they’d be in paradise.

So why hadn’t he seen one yet?

The pigeons he remembered had all been large, noisy and brightly coloured, but he knew there were smaller species too, some of them quite well camouflaged. They hardly needed to be silent and invisible, though, here of all places. And there had to be thousands of them.

He said, ‘Can we stop here for a while? Maybe we’re scaring them with all the noise.’

Grant nodded. ‘That’s worth a try.’

Prabir stood motionless for ten minutes, staring up into the branches. He could hear other birds in the distance, and a constant hum of insects, but nothing like the discordant clacking he remembered.

Grant couldn’t resist needling him. ‘So where are they, eagle-eyes? You have my advantage in both youth and experience; if you can’t see them, we might as well go back to the boat.’

‘Don’t tempt me.’ He had a better idea, though. ‘Have you got a camera on you?’

‘Yeah, of course.’

‘Can I borrow it?’

Grant hesitated, then handed it to him.

He examined it carefully. ‘How much did this cost?’

‘Five hundred euros. Which is well above my personal definition of “disposable”. Why? What are you planning to do with it?’

Prabir commanded her loftily, ‘Be patient.’ Five hundred euros meant that the lens would give a much sharper image than his notepad’s camera, and the stabiliser would be a laserring system, not a trashy micro-mechanical accelerometer.

Grant brushed the debris off a fallen trunk and sat down. Prabir set the camera to the widest possible angle, aimed it at a tree twenty metres away, and recorded sixty seconds of vision.Then he passed the data to his notepad through the infrared link.

The program he needed was three lines in Rembrandt, his favourite image-processing language. As he watched the result on the notepad’s screen, Grant saw the expression of delight on his face and came over to see what he’d found.

Outlined in fluorescent blue by the software, half a dozen small green-and-brown birds moved along the branches. Prabir glanced up from the screen to the tree, but even now that he knew exactly what to look for, he couldn’t see the birds for himself. The software was only identifying them in retrospect by comparing hundreds of consecutive frames, and even then it sometimes lost track of their edges against the pattern of leaves.

Grant complained indignantly, ‘You don’t know how galling this is. I grew up on smug biologists’ jokes about pathetic computerised attempts at vision.’

Prabir smiled. ‘Things change.’ Grant was probably only ten years old than he was, but the idea seemed as quaint to him as jokes about heavier-than-air flight.

‘Can you replay it?’

‘Sure.’

As she watched the scene again, she mused, ‘I’ve seen stick insects with that level of camouflage. And some predatory fish. But this is extraordinary.’ She laughed and swatted something on her neck. Prabir had expected her to be elated by their find, but the birds’ proficiency seemed to unnerve her.

He struggled to recall the images Madhusree had shown him back in Toronto. ‘You think this is the pigeon that turned up in Ambon nine months ago?’

Grant nodded. ‘We’ll need specimens to be sure, but it looks like it.’

‘But how did you know it would be here? I thought no one had traced it back from the bird dealer.’

‘They hadn’t, but this seemed the most likely spot. I can’t think why no one else looked here. Maybe it was just prejudice: the Bandas aren’t wild, they aren’t pristine, they aren’t havens of biodiversity. How could a new species possibly be born in a place that was so “barren”?’

‘You tell me.’

‘I will, when I know.’

Grant had brought a tranquilliser gun. Prabir improvised software to display the outlines with the minimum possible time lag, but it still took them three hours to hit their first target. As he picked the sleeping bird out of the undergrowth, he reflected uneasily on the possible source of its mutations. He still believed it was more than likely that he was looking at a recent descendant of a Teranesian migrant, but if it had brought along a mutagenic virus that could cross between species, tens of thousands of people were potentially at risk. The virus might have taken eighteen years to leap the biochemical gulf between butterflies and birds, but birds were notorious for harbouring potential human diseases. He wished he could get some straight answers out of Grant; it was one thing to avoid starting groundless rumours, but she owed him an informed opinion on whatever it was she thought they were dealing with.

They returned to the boat at dusk, grimy and exhausted, with blood from four pigeons. Prabir looked on as Grant prepared the samples for analysis; the preservative that had kept them stable in the heat had transformed them into blobs of puce jelly.

He said, ‘Do you know anything about the species that used to be here? I don’t mean prior to the Dutch; just ten or twenty years ago.’

‘There’s a 2018 report that mentions half a dozen sympatric species of Treron, Ptilinopus and Ducula.’

‘ “Ducula” You’re making that up.’

‘No, they’re the big ones. Imperial pigeons.’

‘So what does “sympatric” mean?’

‘Sorry. Co-existing, sharing territory.’

Prabir nodded, ashamed at his laziness; the child who’d named Teranesia wouldn’t have needed to ask. He’d never studied European classical languages, but everyday English had inherited all the clues: just hybridise ‘symmetry’ and ‘repatriate’.

Grant said, ‘Treron are green, but the others are usually brightly coloured, presumably for the sake of mate recognition. The theory is, that’s how they formed separate species in the first place: runaway sexual selection based on plumage, overriding any need for camouflage in the absence of predators.’

‘So where have they all gone?’

She shrugged. ‘Maybe the bird trade wiped them out. The prettiest fetch the highest prices, and they’re also the easiest to catch.’

Prabir wasn’t so sure; fruit pigeons weren’t exactly birds of paradise. Still, times must have been hard after the war, and maybe there’d been enough of a market to make it worth hunting them down.

Grant pulled open a panel on the rack of analytic equipment, and pushed one of the tubes of blood on to a spike. ‘Now we wait.’

Prabir went for a swim in the deserted harbour, staying in the water until it was so dark that he began to wonder what he might be sharing it with. He’d forgotten to bring a towel out with him, so he sat on the deck for a while to avoid dripping all over the cabin. When he walked back in, Grant glanced up from her workbench, taken unaware. He went over to his bunk to put on a T-shirt.

He called out, ‘Any news?’

‘I’ve got all the sequences.’

‘And?’ He approached her. ‘Is it the same species as the one they found in Ambon?’

Grant replied hesitantly, ‘One of our sequences is almost identical to the Ambon data. And all four have the same novel blood proteins as the Ambon bird.’

Prabir cheered. ‘So you were right: you found it in the wild. Congratulations!’ Grant didn’t look particularly pleased, though. He said, ‘What else?’

She glanced down at her notepad. Prabir could see strings of base-pair codes and a cladogram. ‘They also have genetic markers in common with some of the uncamouflaged species we assumed were gone.’

Prabir tried to make sense of this. ‘You mean, they weren’t wiped out, they started breeding with each other?’

‘No, there’s no evidence of that. Each individual specimen we collected shows signs of a distinct recent ancestry. I’m not even sure that they’re not still separate species.’

‘Now I’m confused.’ He laughed. ‘They look identical, they share exotic blood proteins, but you think they have completely different lineages?’

Grant spread her hands on the bench. ‘I can’t be certain, but it looks to me as if they’ve all converged on the same set of traits, within a couple of generations, without interbreeding. Something has given rise to the same genes for the blood proteins and the camouflage, independently, in at least four different species.’

Prabir sat on the stool beside her. ‘Something?’ This was absurd, she had to be mistaken, but he was hardly equipped to tell her where she’d gone wrong in her analysis. ‘What are you suggesting? There’s a retrovirus on the loose that splices a set of fruit pigeon genes into anything it infects—including some genes that happen to be exactly what fruit pigeons need to vanish into the foliage?’

Grant scowled. ‘I haven’t taken leave of my senses completely. And I don’t have viruses on the brain like you do.’

‘OK, I’ll shut up about viruses. But what’s doing it then? Where did these genes come from?’

She stared down at the bench, still angry with him. He was sure she had an answer, though; she just wasn’t willing to commit it to words.

Prabir said gently, ‘I know how important it is for you to be cautious. But I’m not going to leak your theory to Nature, or sell your data to some rival pharmaceuticals company. And if I’m at risk of fathering children with bright-green feathers, don’t you think I deserve to be told?’

He regretted the words as soon as they were out, but Grant’s expression softened. She said, ‘If these pigeons haven’t interbred for hundreds of thousands of years, what do they still have in common?’

Prabir shrugged. ‘They share the same habitat.’

‘And?’

‘I don’t know. I suppose they’d still share most of their genes, dating back to their last common ancestor.’

Grant said, ‘Exactly. But not just working genes: whole stretches of inactive DNA as well. Don’t you see? That has to be the source of all these “innovations”—they’re not innovations at all! You can’t get functional genes appearing out of nowhere in two or three generations. You just can’t! A random sequence of amino acids doesn’t merely form a useless protein, it forms an ill-conditioned one: a molecule that doesn’t even fold predictably into a well-defined shape. These blood proteins are perfectly conditioned: they have conformations with energy troughs as sharp as haemoglobin’s. The same with the pigmentation morphogenesis proteins that produce the camouflage. The odds of that happening by chance—de novo, in the time frame we’re talking about—are nil.

‘Somehow, these birds must have repaired and reactivated genes from an old common ancestor. They’ve reached back into the archives and dusted off blueprints that haven’t been used for a million years.’ She shook her head, smiling slightly, shocked at her own audacity but triumphant too. ‘That’s what I half suspected all along, but this makes the case a whole lot clearer.’

Prabir was still catching up. ‘You’re saying that all these different species of pigeon have found a way to resurrect fossil genes buried in their DNA, and because they have so much old baggage in common, the same traits have emerged in all of them?’

‘That’s right.’

‘So they’ve all reverted to the appearance of an ancestral species that needed camouflage to hide from some ferocious predator? And presumably they’ve not only lost their flashy plumage, they’ve lost the need for their mates to have it as a prerequisite for sex, or they would have all died out by now?’

‘Presumably, yes.’

‘And when a tree frog or a bat does the same thing with its DNA, the result is different, but still useful, because they’re getting back something that was useful a few million years ago to some frog or bat then?’

‘Yes. That’s the theory.’

Prabir ran a hand over his face; he’d forgotten how tired he was, but after nine hours of slogging through the plantation his brain had turned to mush. ‘That much I follow. Now explain the next part to me, slowly: why is this happening in all these different species? And how?’

Grant hesitated, as if she was about to draw the line here, but then she must have decided that she had nothing more to lose. She said, ‘The only reason I can think of for an innate capacity to do this would be as a response to genetic damage. No one’s ever seen a repair mechanism that operates like this before, but it’s been known for years that functioning genes are vulnerable to certain kinds of damage that leave other parts of the chromosome untouched. Cleaning up old sequences that have fallen into disuse could be a repair strategy of last resort, because even the random copying errors they’ve suffered over time might have done less harm than whatever’s afflicting the modern genes.’

Prabir didn’t dare say it, but this sounded so much like restoring a computer in extremis from mothballed backups that it was uncanny. It also sounded so far beyond any conventional notion of how genomes were organised that Grant’s initial refusal to discuss her hypothesis, which he’d taken as verging on paranoia, now looked like mere self-preservation.

‘And that might be handy in somatic cells, to stop certain kinds of cancer?’ he suggested. ‘If some growth regulator gene has been damaged in a cell in my intestine, say, the cell might reactivate a copy of the gene that was duplicated accidentally thousands of generations ago, and fell into disuse?’

‘Exactly. So normally there’d be no visible effects: if an adult starts producing an archaic protein in a few intestinal cells, or skin cells, that’s not going to change its gross anatomy. And even if the process was activated in an early embryo, it would generally produce just one altered individual who’d bear perfectly normal offspring. To produce heritable changes, it has to be turned on in the germ cells; that must be what’s happening here, but don’t ask me why, because I have no idea yet.’

‘OK. But if this is a response to genetic damage, what’s triggering it? Doesn’t there still need to be some kind of powerful mutagen, even if what we’re seeing is the result of the animals conquering it, rather than succumbing to it?’

‘Maybe. Unless it’s being triggered inappropriately; unless they’re overreacting to some other kind of stress.’ Grant lifted her notepad off the bench and thumbed through the sequence of codons. ‘I don’t have all the answers; I’m not even close. The only way to understand this will be to unravel the whole mechanism: identify the genes that are being switched on in every affected species, then see what proteins they encode, what functions they perform, and what activates them in the first place.’

Prabir groaned. ‘ “Every affected species” Why don’t I like the sound of that part?’

Grant regarded him with sergeant-majorly contempt. ‘A bit more field work isn’t going to kill you. You’ve got nothing to complain about; just wait until you get to my age.’

‘You wait until you’ve spent ten years behind a desk.’

She shuddered. ‘All the more reason to want to be here instead. Besides, these are the creatures you grew up with, aren’t they? Think of it as a chance to be reunited with all your old childhood friends.’

‘“Childhood friends’” Prabir climbed off the stool and limped across the cabin to the galley. ‘Do you mean Bambi and Godzilla? Or their mutual great-great-grandparents?’

9

Prabir slept on deck again, untroubled by insomnia. He woke at first light, aching all over, but unaccountably happier than he’d felt in months.

He dived into the harbour and swam slow laps to a navigation buoy and back, just to loosen the muscles in his shoulders. People heading out in rickety fishing boats shouted greetings, and in the water the close heat of dawn didn’t feel oppressive at all. He’d taken up swimming in Toronto for a while, doing laps before work in a pool full of fanatics with scalp-to-toe anti-turbulence depilation and sports watches with faux-AI plug-ins to coach them on their stroke. But it had made him feel twice as tense as doing nothing, so he’d given it away.

Thinking back on the evening’s revelations, his sunny mood seemed less of a mystery. Even if Grant’s theory turned out to be misguided, one way or another the data they collected would help shed light on what was happening. That wasn’t exactly what had brought him here, but the more he thought about it, the more it seemed like the key to all his anxieties. Ever since Madhusree had told him about the expedition, he’d been treating the spread of the mutations as some kind of vague malevolent force, reaching out from Teranesia to drag her back into its clutches, mocking the very idea that they’d ever escaped. That was every bit as deranged as anything the cranks in Ambon had spouted, but the clearer the real, molecular basis for the effect became, the harder it would be to sustain that kind of delusion. A complete answer might be decades away, but playing some small part in getting there would make him feel less helpless, less overwhelmed. That was what his parents had spent their lives fighting for: not just explaining the butterflies, but puncturing the whole deeply corrupting illusion that nature—or some surrogate deity—ever had designs on anyone, malevolent or otherwise.

Halfway through his fifth lap, he spotted Grant approaching. She called out to him jokingly, ‘I thought you’d been kidnapped.’

‘Sorry. I got carried away.’

‘I don’t blame you. It’s unbelievable.’ They trod water over an outcrop of branched red coral, festooned with anemones and swarming with tiny bright fish—all at least six metres below them, but the details were so sharp that they might have been looking down through air.

Prabir felt a sudden urge to come clean with her; whatever the significance of the butterflies turned out to be, he was tired of having the deception between them. He’d proved himself useful to have around, even if it was more as ad hoc technical assistant and general dogsbody than cultural liaison. And surely she’d understand his reluctance to reveal the whole family history to a stranger.

He struggled to find a place to start. ‘Were your family excited by the news last night?’ He hadn’t eavesdropped; she’d been talking to her son right in front of him as he’d gone out on to the deck to sleep.

Grant frowned. ‘News? You mean the pigeon sequences? I couldn’t tell them about that; there’s a confidentiality clause in my contract.’

Prabir was shocked. ‘But you—’

‘And you mustn’t mention it to anyone, either. Especially not your sister.’

Prabir was about to retort that he wasn’t bound by any contract, but it didn’t seem like a good idea to drive home the point that she’d been unwise to confide in him.

He said, ‘Whatever happened to scientists sharing data?’

‘Welcome to the real world.’

‘And you’re happy with this?’

‘Delirious. I love being gagged.’ Grant plucked irritably at something crawling up the arm of her T-shirt.

‘Then why did you do it? Why did you sign the contract? Couldn’t you have joined the university expedition instead?’

‘I’m not an academic. Everyone on that boat is being paid a salary from somewhere—student slave labour like your sister excepted. In the unlikely event that they’d let me on at all, I would have had to pay them for the privilege. I enjoy what I do, but I’m not in it for charity. I have a family to support.’

Prabir wasn’t about to do a post-mortem on anyone’s career choices. ‘How long does it apply? The gag?’

‘That depends. Some things might be cleared for publication by the lawyers in a couple of months. Others might take years.’

It came to him suddenly that his parents had published nothing in all their years on the island. They’d taken money from Silk Rainbow. They must have made the same kind of deal.

Grant frowned. ‘Are you OK?’

‘Just a stitch.’

‘You’re not planning to quit on me in disgust?’

‘Hardly.’ It shouldn’t have stung so much. They’d made one small compromise in order to do something that otherwise would not have been done at all. When had he started thinking of them as flawless, immaculate?

Grant started back towards the boat. Prabir called after her, ‘New rules, though. First one out of the water cooks breakfast.’

Grant had chosen six small islands from which to gather samples, lying in an arc that ran south-east from the Bandas to the Kai Islands. All were uninhabited, unless they had settlements so small that they’d escaped the notice of the official cartographers. The third was just seventy kilometres north-east of Teranesia, slightly closer than the Tanimbar Islands to the south; if it had been on the maps when Prabir was a child, he and Madhusree might have ended up stranded there.

When he’d joined Grant in Ambon, he’d imagined himself somehow ‘steering’ her towards the source of the mutations; fat chance of that, but the route she’d picked would already take them about as close as he wanted to get. He could only hope that whatever the biologists’ expedition had discovered was drawing them in the same direction; it seemed naive now to think that Madhusree—lowest of the low in the academic pecking order—could have swayed a boatload full of experts with their own theories and agendas.

They sailed out of Banda Harbour early in the afternoon, and it was close to sunset when they arrived at the first of the islands. They dropped anchor a hundred metres from shore and spent the evening recuperating, drawing entertainment off the net. To Prabir’s amazement, Grant turned out to like Madagascan music as much as he did, and she knew all the esoterica better. After a while he stopped trying to compete with her at naming performers and recordings, and just let her dazzle him with her erudition.

Grant winced suddenly. ‘Quarter to ten! I promised Michael I’d call him in his lunch hour.’

Prabir went out on deck to give her some privacy. He sat perched on the guard rail at the stern of the boat, swaying slightly to keep himself upright, the sound of the valiha still playing in his head.

If he agonised over it, he knew he’d never do it. He pulled out his notepad and hit three buttons in rapid succession.

Felix grinned up at him from the screen. ‘How’s it going?’

Prabir shrugged. ‘It was strange being back at first, but I’m getting used to it. How’s work?’

‘Dull beyond words. I’m disgusted that you’d even ask. Any sign of Madhusree?’

‘Not yet. I think we’re both heading in the same direction, but it’s going to be a matter of luck whether I catch up with her or not.’

Felix said tentatively, ‘I could always call her and tell her you’re on your way. It’s not as if she could really pressure you into turning back now, even if she wanted to. And she might take the whole thing better if she was forewarned.’

‘I don’t think that would be a good idea.’

‘Compared to what? Arriving unannounced?’

Prabir thought seriously about the suggestion. But why risk alienating her, when there was still no guarantee that their paths would actually cross? He said, ‘Don’t worry about it. If we meet, we’ll sort it out. If we don’t, I’ll confess everything once we’re back in Toronto, and she’ll just laugh and forgive me on the spot.’

He recounted as much as he could about the Bandanese pigeons; Felix seemed neither surprised nor offended that he couldn’t be let in on the sequencing results. They talked for almost half an hour, until Felix had to go and refill his pipetting robot’s reagent tanks.

When the window closed and Prabir looked up, his eyes still adapted to the brightness of the screen, he felt unspeakably strange. It wasn’t just a pang of loneliness; he wasn’t sure that it had much to do with Felix at all. It was the connection breaking, the image fading, the whole illusion collapsing in front of him, leaving him with nothing but darkness and the mechanical rocking of the sea.

He sat on the railing, watching Grant smiling and laughing in the cabin, and waited for the feeling to pass.

They circumnavigated the island, probing its fringing reef with sonar until they found a safe approach to a small sandy beach. Grant anchored the boat in a metre of water, and they waded ashore. Prabir looked down at the fine, bone-white sand with a jolt of recognition, but he let the feeling wash over him, neither fighting it nor pursuing it to its source.

He found some shade and sat to pull his boots on, squinting back at the sunlit water. Silver on turquoise, the view was indistinguishable from one he’d seen a thousand times before. The memory went deeper than vision: as he tightened his laces he grew aware of a disconcerting ease in his limbs, an assured and unselfconscious physicality beneath the fading ache from the plantation. A few laps in Banda Harbour could hardly have restored him to childlike resilience, but on some level his body still carried a trace of what it had once felt like to swim in this sea every day.

Grant said, ‘Are you ready?’ She gestured at the mine detector clipped to her belt. Prabir hit the self-test button on his own device; it chimed reassuringly and flashed a green light, whatever that was worth.

The whole island was low jungle, with soil trapped by dead coral that must have grown on a submerged volcanic peak. They’d barely passed the first palm tree when a cloud of small flies descended on them, biting them relentlessly.

They retreated to the beach. Grant shielded her eyes with one hand as Prabir circled her with the insect repellent. She seemed tense out of all proportion to the inconvenience; he couldn’t even smell the stuff. ‘You’re not allergic to this, are you?’ He checked the can for warnings; if she went into shock he’d have to dash for the medicine cabinet.

‘No. It’s just cold.’

They swapped places, and Prabir quickly discovered that she wasn’t joking; the solvent evaporated so quickly that it was like being doused with a fine spray of ice. He mused, ‘If we engineered ourselves to sweat isopropyl alcohol, humidity would have no effect on the efficiency of the process. What do you think?’ Come the revolution. But the revolution was taking its time.

‘I think you’re completely unhinged.’

They tried the jungle again. The insects retreated, but the undergrowth was even more impenetrable than Bandanaira’s, with a dense, thorned shrub that Prabir had never seen before crammed into the gaps between the familiar ferns. He tore off a spiked, leathery branch and held it up to Grant. ‘What are the thorns for? I know there are plenty of birds that eat fresh shoots, but what is there here that would try to eat something this old and tough?’

Grant frowned. ‘Beats me. As far as I know, all the lizards here are insectivores. You can find deer this far east, but only where they’ve been introduced by humans. If you want to hang on to that I’ll try and identify it later.’

Prabir dropped it in his backpack. ‘You think plants could be affected, too?’

‘It probably just blew in on the wind from somewhere.’ Suddenly she grabbed his shoulder. ‘Look!’

Ten metres away, a jet-black cockatoo exactly like the one they’d seen in Ambon sat perched on a branch, watching them.

Prabir said, ‘That’s one for the migration theory.’

Grant was conceding nothing. ‘If four different species on Bandanaira can converge to the point of being indistinguishable, I don’t see why the same thing can’t happen independently here and on Ambon.’

Prabir scrutinised the bird uneasily. The teeth embedded in the bill not only meshed with uncanny precision, they were limited to the sides of the jaw, where the upper and lower halves met; the great curved hook in the centre had none. Even if they offered no particular advantage, they certainly weren’t present at any point where they’d be utterly useless, for want of a matching surface to cut or grind against. But the specialised bill shape that suited the diet of an ordinary black cockatoo would have evolved long after its ancestors had given up on the whole idea of teeth, so how had the ancient reptilian genes supposedly responsible for their reappearance come to be switched on and off in exactly the right places? Why should two sets of genes that had never been expressed in the same animal before turn out to interact so harmoniously?

Grant took aim with the tranquilliser gun. The dart hit its target and stuck, but didn’t take effect as rapidly as it had with the much lighter pigeons. The cockatoo rose from its perch with an outraged squawk, featherless red cheeks flushing blue, and swooped straight towards them, almost reaching them before it fell.

Prabir pushed forward to try to find it in the undergrowth while the arc of its descent was still fresh in his mind. Grant joined him. They combed through the shrubs together for five minutes without success; the bird must have been heavy enough to sink through the vegetation right to the ground.

Grant swore suddenly.

Prabir looked up. ‘What?’

She was forcing branches and leaves aside with both arms; maybe she was annoyed because she couldn’t pick up what she’d found. She said, ‘Come and have a look at this.’

Prabir complied. Tiny black ants were swarming over the motionless creature, which was more pink now than black. It was already half eaten.

‘Did that look like carrion to you when it hit the ground?’

‘Hardly.’ Prabir reached down gingerly; he didn’t particularly want to fight the ants for their meal, but it would be too much hard work to give up and go looking for another specimen every time something like this happened.

‘Be careful,’ Grant advised him redundantly.

He grabbed one bedraggled wing between thumb and forefinger and tried shaking the carcass clean. Ants swarmed on to his hand immediately; he dropped the dead bird and started swatting them. He crushed most of them in a matter of seconds, but the survivors continued doing something extremely painful—stinging or biting, they were too small for him to tell.

Grant fished out the repellent and sprayed his hand; they’d never thought before to be so thorough. The solvent itself smarted; his skin was broken in a hundred places.

‘Are you OK?’

‘Yeah, yeah.’ His hand was throbbing, but if he’d been stung he didn’t seem to be suffering any systemic reaction.

Grant sprayed her own right hand, and the carcass, then broke a branch off a shrub and used it as a hook. There wasn’t much flesh left on the bird, but it would be more than enough for DNA analysis.

‘At least they weren’t army ants,’ she joked. ‘We’d be lucky to have salvaged anything.’

Prabir eyed the ground nervously. ‘No, but I didn’t think we were in Guatemala.’ His old implant might have given him a rose-coloured view of Teranesia’s insects, but he was sure there’d been nothing as aggressive as this.

He said, ‘If this whole thing is a response to genetic damage, wouldn’t it have shown up in some experiment by now? They’ve been irradiating fruit flies for a hundred years, at every conceivable dosage.’

Grant was way ahead of him. ‘Maybe it has shown up. But one or two individual recovered traits wouldn’t necessarily stand out clearly from genuinely fortuitous mutations. It’s not as if the entire organism would regress to an archaic form that any competent palaeo-entomologist would recognise instantly. I think what’s happening with the displaced organs in some of the mutants is that part of the embryology has been modified out of step with the rest; the result isn’t harmful, because there’s so much conserved across the gap, but it leads to some detailed anatomy that’s neither modern nor archaic.’

‘Right.’ Prabir still couldn’t see how the cockatoo’s teeth had come to be placed so efficiently, but he didn’t know enough about the subject to argue the point with any confidence. ‘But when you look at the original DNA of the pigeons that used to live on Bandanaira, can you see where the recovered traits have come from? Can you pin down the sequences that have been cleaned up and switched on in the birds we saw?’

Grant shook her head. ‘But I don’t expect to be able to do that until I understand how the repair process works. The original sequence might be cut out and spliced into a new location, and even hunting through the whole genome for partial matches wouldn’t necessarily find it.’

Prabir thought this over. ‘So what you really need to do is catch it in the act? Instead of just seeing the “before” and “after” genomes, if we could find an animal where the process was still going on—’

‘Ideally, yes,’ Grant agreed. ‘Though I don’t know how we’d recognise it. I don’t know what we’d look for.’

Nor did he. But it might still be happening most often, and most visibly, on the island where it had happened first.

Any lingering fear of retribution from Grant was absurd; they were friends now, weren’t they? And however annoyed she might be that he’d lied to her, she was hardly going to abandon him here.

But Madhusree had promised to say nothing. How would she feel if he broke the silence first, without consulting her? And if Grant scooped the expedition with his help, the discovery wouldn’t become public knowledge, it would be the property of her sponsor.

He said, ‘So all we can do is gather as many samples as we can, and hope to get lucky?’

Grant squared her shoulders stoically. ‘That’s right. When you don’t know what you’re looking for, there’s no substitute for overkill.’

They stayed on the island for six days. Prabir didn’t exactly grow inured to the drudgery, but there was some consolation in being so tired every night that he could fall asleep the moment he was horizontal. They found twenty-three species of animals and plants that appeared to be novel, though Grant pointed out that the odds were good that one or two had simply failed to make it into the taxonomic databases.

The second island was another half-day’s sailing away. Within an hour of coming ashore, they’d seen what appeared to be the same thorny shrubs, the same flies, the same vicious ants.

They worked their way deeper into the jungle, staying within sight of each other but collecting samples independently. Prabir had rigged up software that took images from his notepad’s camera and searched the major databases for a visual match to any previously described species. Grant scorned this approach; she had no encyclopaedic knowledge of the region’s original wildlife, but she seemed to have acquired the knack of recognising subtle clues in body plan and coloration. At the end of the day, judged against the sequencing results, their hit rates had turned out to be virtually identical.

Prabir stopped beside a white orchid, a single bell-shaped flower almost half a metre wide. Its thick green stem wound around a tree trunk and ended in a skein of white roots that clung to the bark, wreathed in fungus but otherwise naked to the air. There was an insect sitting in the maw of the flower, a beetle with iridescent green wings. He crouched down for a closer look; he was almost certain that this was a species Grant had found on the previous island that had turned out to be modified. If so, it was worth taking for comparison.

He sprayed the beetle with insecticide and waited a few seconds. There was no death dance, none of the usual convulsions. He gripped it by the sides and tried to dislodge it, but it seemed to be anchored to the petal.

The flower began to close, the petals sliding smoothly together. Prabir drew his hand back, but the flower came with it; the sticky secretion that had trapped the beetle had also glued his fingers to its carapace. He laughed. ‘Feed me! Feed me!’ He grabbed hold of the stem of the orchid and tried to extricate himself by yanking his hands apart, but he wasn’t strong enough to break the adhesion, or tear the plant. It was like being superglued to a heavy-duty rope wound around the tree trunk.

The flower now loosely enclosed his forearm, and the reflex action hadn’t stopped. He tried to stay calm: pitcher plants and sundews took days or weeks to digest a few flies; he wasn’t likely to get doused in anything that would strip his flesh to the bone. He fumbled for his pocket knife and attacked the petal. It was tough and fibrous as a palm leaf, but once he’d punctured it he managed to saw through it easily enough, hacking out a piece around the beetle. The orchid began to unfurl immediately, maybe because he’d taken away the source of the attachment signal. But why hadn’t it closed on the beetle itself?

Grant must have seen him struggling; she approached with a look of concern that turned into an enquiring smile as she realised that he was uninjured.

Using the knife blade, he managed to lever one finger free of the beetle. Grant took his hand and peered at what was still glued to his thumb. ‘That’s extraordinary.’

‘Do you mind?’ Prabir pulled his hand back. ‘If you want to wait five seconds, you can have a proper look.’ He forced the tip of the blade between skin and carapace, and finally dislodged the beetle, with orchid fragment attached.

Grant picked it up and examined it. ‘I was right. It’s a lure.’

‘You’re joking.’ Prabir took it from her and held it up to the light, examining the petal edge-on. What he’d taken for an insect was an elaborately coloured nodule growing out of the plant itself. He said, ‘So a beetle comes along and tries to mate with this?’

‘A beetle to mate with it, or maybe something else that thinks it’s going to eat the “beetle”. It’s quite common for orchids to have one entire petal that looks like a female wasp or bee, as a pollination lure. But with an adhesive like that, I have a feeling the end result wouldn’t be a light dusting with pollen.’

Prabir re-examined the damaged orchid. There was no pool of digestive juices waiting at the bottom of the flower, but perhaps it would have secreted something if it had been able to close fully.

He passed the lure back to Grant. ‘Don’t you think it looks like that modified species you found a few days ago?’

‘Dark-green shiny wing cases, about two centimetres long? Do you know how many beetles would fit that description?’

‘I think it looks identical.’ Prabir waited for her to contradict him, but she remained silent. ‘If it is, isn’t that stretching coincidence? For a process that wakens old genes in this orchid to synchronise so perfectly with the same process in the beetle—’

Grant said defensively, ‘They might have been here together for millions of years. It’s not inconceivable that two independently recovered traits could reveal an archaic act of mimicry.’

‘But I thought the beetle wouldn’t look exactly like any of its ancestors. I thought you said the mixed embryology produced distorted body plans.’

‘The lure could be distorted too.’

‘Sure. But in the same way? When its morphogenesis is completely different?’

Grant regarded him irritably. ‘I really don’t think they look that similar.’

They’d been photographing everything; they didn’t need to wait until they were back on the boat to make a comparison. Prabir summoned up the image and offered her his notepad.

After almost a minute Grant conceded, ‘You’re right. They’re very close.’ She looked up from the screen. ‘I can’t explain that.’

Prabir nodded soberly. ‘Don’t worry; you’ll figure it out. Your hypothesis is still the only one I’ve heard that makes the slightest sense.’

Grant said drily, ‘You mean compared to Paul Sutton’s highly esteemed theory of Divine Cosmic Ecotropy?’

‘I didn’t mean it that way. The last I heard from Madhusree, all her university colleagues were completely stumped, so you still have the advantage on them.’

Grant gave him a weary smile. ‘Thanks for the vote of confidence. But remember how long it took me to confess to the idea. Do you really expect that these people would have been any more forthcoming with your sister?’

The third island was the largest of the six Grant had chosen, almost three kilometres across. Two weeks before, that had sounded like nothing to Prabir’s urbanised ear; he’d often walked that far and back across Toronto in his lunch hour. But the area was eight times greater than the total of the two islands they’d toiled on for six days each, and when he saw the dense jungle stretching back from the beach into low wooded hills, he finally felt the scale of it. It was a far more visceral reaction than anything he’d experienced flying over an ocean or a continent. Probably because Grant would want to gather samples from every last square metre.

They found a gap in the reef almost straight ahead as they approached. It was early afternoon, but Prabir begged for a full day off before they went ashore. They ended up spending three hours snorkelling along the reef, taking pictures but collecting no samples: Grant’s licence didn’t extend to the marine life, and so far there’d been no sign that the mutations did either.

Prabir couldn’t help feeling tranquil in the sunlit water; it was impossible to remain uncharmed by the colours of the reef fish, or the weird anatomy of the invertebrates clinging to the coral. Everything here was beautiful and alien, dazzling and remote. A thousand delicate, translucent fish larvae could die in front of him without evoking the slightest twinge of compassion, the kind of thing a chick or a rat pup in the beak of a hawk would have produced. It was this distance that made the spectacle seem so much purer than anything on land: the same vicious struggle looked like nothing but a metaphorical ballet. If his roots were here, he had no sense of it; his body had built its own tamed sea and escaped to another world, as surely as if it had ascended into interstellar space, too long ago to remember.

Sitting on the deck beside Grant in silence, the salt water drying on his skin, Prabir felt calm, lucid, hopeful. The past was not an immovable anchor. What evolution had done, design could do better. There would always be a chance to take what you needed, take what was good, then cut yourself free and move on.

The jungle was as lush as anything Prabir had seen, but without quantifying the impression with a count of species, it also struck him as impoverished. The thorned shrubs and the giant orchids were evident in abundance, but there was nothing at all in sight that merely resembled them. No close relatives, only the things themselves. Whatever else Grant’s theory had trouble explaining, you couldn’t wind the clock back on a set of surviving lineages and expect to maintain the diversity you started with, and here you could practically see the ancestral bottlenecks everywhere you looked.

Grant called him over. She’d found an orchid clamped shut around the corpse of a small bird, bright-blue tail feathers protruding.

Prabir said, ‘I wish you hadn’t shown me this.’

‘Forewarned is forearmed. What I really want to know is—’ Grant sank her knife into the white petals and tore the shroud open.

Ants poured from the gash. As she pulled the knife away, the skeleton of the bird sagged down from the flower, swarming with them.

She inhaled sharply. ‘OK. But is that just opportunism?’ She cut the flower again, then extended the incision down into the stem.

There was a hollow core, full of ants. Grant handed Prabir the camera, and he recorded everything as she continued the dissection, following the stem around the trunk five times until she’d laid the whole internal city bare. There were chambers full of foamy white eggs, and a bloated queen the size of a human thumb.

Prabir said, ‘What does the orchid get out of it?’

‘Maybe just food scraps and excrement; that could be more than enough. Or maybe the ants are feeding it something specific, some secretion tailor-made to keep it happy and fit.’ Grant was clearly elated, but then she added wistfully, ‘Someone’s going to spend a lifetime on this.’

‘Why not do it yourself?’

She shrugged. ‘Not my style. Begging to foundations for charity to do something beautiful and useless.’

Prabir felt like grabbing her by the shoulders and shaking her; this sounded so defeatist. He said, ‘Maybe in a few years you’ll feel differently. Once you’re not facing the same financial pressures—’

Grant pulled a face. ‘Don’t organise me; I hate that. No wonder your sister ran away from home.’

Prabir crouched down beside the orchid. ‘First mimicry, now symbiosis. These gene-recovery enzymes of yours can hit a bull’s-eye at fifty million years.’

‘And don’t gloat, it doesn’t suit you. I admit it, freely: there’s something going on here that I don’t understand.’

Prabir said, ‘I still think your basic idea must be right. Functional genes take thousands of years to develop. If they appear overnight, the organism has to be cheating. “Here’s one I prepared earlier.” What else can it be?’

Grant seemed ready to accept this, but then she shook her head. ‘I can’t answer that, but it’s starting to look as if I’m missing something fundamental. Perfectly camouflaged birds with no predators. Thorned plants with nothing even trying to munch on them. There are misses as well as bull’s-eyes. But even the misses are too precise.’

She squatted beside Prabir. The ants were methodically criss-crossing the tear in the stem, secreting a papier-mâché-like scaffolding a thousand times faster than any plant could have grown new tissue. She said, ‘Don’t you wish you could just ask them for the whole story? When did they get together and sort this all out? Why did they stop? Why did they start again? What is it we don’t understand?’

It was late morning on the second day when they reached the mangrove swamp. They were at least a kilometre inland, but there was a narrow valley running from the heart of the jungle to the coast, its floor a would-be river bed with too little runoff feeding it to prevent sea water flooding in at high tide. At low tide, the halophytic trees would stand naked in an expanse of salty mud, but that was still hours away; for now, the way ahead was inundated.

Grant peered into the tangle of branches and aerial roots. ‘It’s only a few hundred metres across. We should be able to wade through without too much trouble.’

‘And then time it so we can cross back at low tide?’

‘Yeah.’

Prabir found that part appealing; if they had to do this at all, he’d rather do it while he still had the energy.

He double-checked that all the sample tubes he was carrying were sealed; his watch and notepad were fully waterproof. There didn’t seem much point taking any of his clothes off; they’d get coated in slime however he carried them, and the more protection he had against scrapes and splinters from the roots, the better.

Grant waded in up to her knees. Prabir followed her, every step like an exaggerated mime of walking as his boots stuck afresh in the mud. The water was turbid with silt, almost opaque where it could be seen at all, but most of the surface was covered with a layer of algae and dead leaves. The odour of salt and decay was insistent—like breathing over a garden compost heap with seaweed added for effect—but not overpowering or stomach-turning. Other parts of the forest had smelt worse.

The protruding brown roots of the mangroves were dotted with snails, but Prabir spotted small brown crabs as well. Clouds of mites and mosquitoes approached them and then backed away; at least their repellent was holding out. The trees were twenty or thirty metres tall; it was eerie to look up into the branches, decorated with small white blossoms and tiny green fruit, then down into what was essentially dirty sea water, as if a forest had sprouted in the middle of the ocean.

The mud was annoying, but it wasn’t treacherous; the hidden mangrove roots were far more pernicious. Every time Prabir thought he’d learnt to judge where a clear stretch of ground might lie between two trunks, he walked into a root at shin height. The water was above his waist now, and the clues from the visible roots were getting harder to read. He’d started out following directly behind Grant, unashamedly letting her blaze the trail, but then his concentration had lapsed, and he’d skirted a submerged obstacle on his own to find that they’d been shunted to either side of it. Since then, they’d been moving further apart, following entirely separate paths through the drowned maze.

Grant called out to him, ‘Hey, watch out!’ Prabir looked around; a black snake about a metre long with narrow yellow stripes was swimming towards him. He scanned the tangle of litter around the nearest trunk, looking for a forked stick he could use to persuade the snake to keep its distance, but it veered away of its own accord, blinking elliptical green eyes like a cat’s.

The water grew deeper, reaching high on his chest; the trees thinned slightly, but not enough to compensate for the loss of visibility. Grant was a few centimetres shorter than he was, and she was submerged almost up to her chin. Prabir shouted, ‘Next time, we cheat and take the boat around the coast.’

‘Amen to that.’

‘I don’t want to come back this way, even when the tide’s out. We’d be better off walking along the beach, and swimming across the inlet if we have to.’

Grant swore suddenly; Prabir assumed she’d just been bruised twice in the same spot in rapid succession, which was particularly painful. She shouted, ‘This is ridiculous! I’m going to try swimming, here and now.’ She leant forward into the water and began a slow breast-stroke.

Prabir observed the experiment with interest. She was scooping aside some of the surface muck as she went, but it was still piling up around her face and shoulders. ‘What’s it like?’

‘Not too bad. The current’s pretty strong, though.’ She wasn’t exaggerating; as the water carried her sideways she almost collided with a trunk, but she managed to swim clear of it. It looked no more dangerous than tripping through the roots, and a whole lot faster.

Grant was wearing light canvas shoes; Prabir would have to take his boots off to swim. He hesitated, wondering if it was worth the trouble. He crouched down, submerging his head to reach the laces, but they were too slippery and waterlogged to untie; his fingernails slid uselessly over the knots he’d made to secure the bows.

He stood up, scraping mulch off his face. Grant was no longer in sight.

He shouted after her, ‘Wait for me at the shore!’

A faint reply came back. ‘Yes!’

Prabir trudged on, occasionally making a half-hearted attempt to swim over obstacles. He’d grown fitter over the last two weeks, and reached the point where their normal day-long excursions were bearable, but just stepping over the endless, unpredictable succession of mangrove roots was turning the muscles in his legs to jelly. Once he was out of this shit-hole, he had no intention of spending three hours gathering samples for Grant; he’d walk down to the ocean, wash the slime off his body, and curl up under a palm tree. How had she managed to stretch his unpaid duties so far beyond bad translations, bad cultural advice, and surprisingly reasonable cooking?

He could see a grassy clearing ahead, with ordinary trees behind it. The water was still up to his chest, but dry land was just ten or fifteen metres away. He shouted, ‘Grant? I’ve had enough! I’m going on strike!’ If she was in earshot she didn’t deign to reply.

The ground climbed abruptly, the water dropped to waist height; the shore was within reach, no longer an unattainable mirage. Prabir’s shins collided with an obstacle that felt like a large fallen branch; wearily, he stepped back in order to step over it, but then his calves hit something behind him, just as high, that felt much the same.

For a moment he was simply bemused. Could he have sleep-walked right over the first branch, without even noticing it?

Then the gap between the two obstacles tightened, and he realised that they were parts of the same thing.

He quickly pulled his right foot out of the enclosing coil, and probed forward for a safe place to put it. As his foot touched mud, the snake shifted, dragging his left leg back, overbalancing him. He hit the water with his hands over his face, cringing with fear—terrified of coming eye to eye with the thing, though he knew that was the least of his problems. He swam forward clumsily, fighting both the instinct to right himself and the weight of his boots dragging his feet down. Then he felt something pass by swiftly and smoothly in the water ahead of him, and his arms came down against the body of the snake, blocking his way again.

He backed away, staggering to his feet, shifting the tightening noose from his lungs to his abdomen just in time. He still couldn’t see any part of the snake, but he’d felt its girth. This wasn’t one of the placid four-metre pythons he’d seen feeding on birds as a child, merely adapted to salt water. It was half as thick as his torso. It would be more than capable of swallowing him.

He opened his mouth to cry for help, but the sound died in his throat. What could Grant do? Tranquilliser darts wouldn’t penetrate the water, and even if she could pump her whole supply into the snake, its body weight would be hundreds of times greater than the largest of the birds they’d used the darts to subdue. She’d end up standing helplessly on the shore watching him die, or getting killed herself trying to rescue him. He couldn’t do that to her. He couldn’t sentence her to either fate.

Prabir groped for his pocket knife, shivering with fear. He scanned the water desperately; if he plunged the knife into the snake’s head with enough force, the blade might just penetrate its skull. The coil of its body slid smoothly over his hips, tightening its hold. He followed his sense of where the motion was coming from, and saw a ripple in the water, a faint wake disturbing the surface.

It was six metres away. He’d be wrapped all the way up to his shoulders before the head came within reach.

He started stabbing wildly at the snake’s body, bringing the knife down from high above his head. The blade bounced off its skin. He collected himself; he was wasting his energy splashing up water. He put both hands underwater and drew the knife up towards his belly with all the strength in his arms and back, seppuku in self-defence. The knife burst through the leathery hide and sank up to the hilt. He tried to drag it along, to make a cut, giddy for a moment with triumphant visions of flaying the snake from head to tail. The knife wouldn’t budge; he might as well have tried to split a tree trunk this way. He pulled it out, and repeated the thrust that had proved successful. As the blade made contact, the snake shifted again, and the knife went spinning out of his hands.

He bent down and fumbled for it. The snake jerked him off balance, immersing him completely. He groped across the mud, but he couldn’t find the knife. He lifted his face up, arching his back to get his mouth out of the water, spluttering for breath. The tell-tale wake was passing in front of him again; the snake had almost completed a second coil. Grant might be able to reach its head. She might find a way to attack it without risking her own life.

And if she couldn’t?

She wouldn’t martyr herself. And if there was nothing she could do, and he died in front of her, she wouldn’t be crippled by the experience. She wasn’t a child.

He filled his lungs and bellowed, ‘Gra-a-a-ant! Help me!’ The snake had finally worked out how to drown a biped: Prabir could feel it change the tension in its muscles, skewing the angle of the coils, forcing him down. He tried to fill his lungs again while he still had the chance, but the constriction around the bottom of his ribcage stopped him dead half way through; it was like hitting a brick wall.

Then he went under.

Prabir lay beneath the water, no longer struggling, faint lights dancing in front of his eyes. This was all wrong: he should have died in the minefield of the garden instead. The first blast would have been enough to kill him instantly; no one would have had to follow him in. His parents would have grieved for the rest of their lives, but they would have had Madhusree, she would have had them.

Suddenly he heard a loud, rhythmic splashing noise. It wasn’t the snake turning hyperactive: someone was beating the water with a heavy object. The timbre gradually changed, as if the water was being struck in successively shallower locations. Then there was a resounding thwack, wood against wood.

The snake’s muscles slackened perceptibly. Prabir fought to raise his head. He caught a shallow breath, and then a glimpse of the lower half of someone standing on the shore. Not Grant: a woman with bare dark legs. The snake twitched back to life and jerked him down again. The beating sound resumed, ten, fifteen powerful blows.

As he struggled to snatch another mouthful of air, Prabir heard the woman slip into the water. He didn’t question his sanity: he knew he wasn’t hallucinating. As he turned the strange miracle over in his head, he felt no fear for her. Everything would be all right, now that they’d been reunited.

The woman said urgently, in bad Indonesian, ‘You need to work, you need to help me! It’s only stunned. And I can’t pull you out on my own.’ Prabir forced himself upright, fighting the passive weight of the snake. The woman wasn’t Madhusree.

She helped him loosen the coils enough for him to climb up on to her back. He didn’t seem to have any broken bones, but he was even weaker from the ordeal than he’d realised; she carried him like a child to the water’s edge, then manoeuvred him on to the ground before she clambered out of the water herself. She picked up the heavy branch she’d used to bash the python senseless, then reached down and hauled him to his feet. ‘Come on. Back from the water before we rest. It won’t be out cold much longer.’

Prabir staggered after her, still holding her hand. His teeth were chattering. He said in English, ‘You’re a biologist, aren’t you? You’re with the expedition?’

She frowned at him, and replied in English. ‘You’re not Moluccan? I knew there were no villages here, but—are you a scientist?’

Prabir laughed. ‘I must be, mustn’t I?’ Stick to the cover story. His legs collapsed.

She crouched beside him. ‘OK. We’ll rest for a bit, then I’ll get you back to base camp.’

‘What were you doing here?’

She nodded towards the snake; its head was still lying exposed on the mangrove roots where she’d cornered it, but it was showing signs of regaining consciousness. ‘Observing them, amongst other things. Though I prefer not to get quite as close as you did.’ She smiled uncertainly, then added, ‘You’re lucky; given that it already had prey secured, I wasn’t sure that even the most frantic imitation of an animal in distress would catch its attention. There’s a paper in there somewhere, on supernormal stimuli versus inhibition signals.’

The snake slid drunkenly off the mangroves, its body rising to the surface in a horizontal sine wave as it swam away. It had to be at least twenty metres long.

Prabir asked numbly, ‘What do they live off? There can’t be that many tourists.’

‘I think they eat wild pigs, mostly. But I’ve seen one take a salt-water crocodile.’

He blinked at her, then jumped to his feet. ‘There are crocodiles? My friend’s back there!’ He started running frantically towards the shore. ‘Martha? Martha!’

Grant appeared suddenly out of the jungle behind him. She seemed about to berate him jokingly for his tardiness, then she saw his rescuer. She hesitated, as if waiting for introductions, then made her own. ‘I’m Martha Grant. I’m with Prabir, we got separated.’

‘Seli Ojany.’ They walked up to each other and shook hands. Grant turned to Prabir expectantly, clearly aware that she was missing something significant, but he didn’t know how to begin. If the python hadn’t fled, he would have just pointed at it and mimed the rest.

Ojany was staring at him too, with an expression of disbelief. ‘You’re not Prabir Suresh? Madhusree’s brother?’

‘That’s right.’

‘You followed her here, all the way from Toronto?’

‘Yes.’

Ojany broke into a wide, delighted grin.

She said, ‘You’re in trouble!’