The Improbable Adventures of Sherlock Holmes

The Adventure of the Inertial Adjustor by Stephen Baxter

Stephen Baxter is a six-time nominee for the Hugo Award, and a winner of the Philip K. Dick, British SF, and John W. Campbell Memorial awards. His short work has been collected in The Hunters of Pangaea and Traces, and his latest novel, Flood, was released in May. Other books include the Time's Tapestry and Destiny's Children series, and the Time Odyssey series, which was co-written with Arthur C. Clarke. Baxter is also the author of the Xeelee Sequence, and several standalone novels, such as The H-Bomb Girl, and The Time Ships, an authorized sequel to H. G. Wells's The Time Machine.

H. G. Wells is a towering figure in the history of science fiction. His work was pivotal in defining many of the themes-time travel, space exploration, alien invasion, invisibility, genetic engineering-that would be mined by later writers. He was also a famous political activist, and his work demonstrates the power of science fiction to grapple with contemporary issues (War of the Worlds was an attack on European colonialism, The Time Machine a broadside against the British class system). Wells is also important to science fiction fans because he published the first rulebook for tabletop wargaming, which was instrumental in the development of pen & pencil role-playing games (such as Dungeons & Dragons) and the immensely popular computer versions that followed. Wells, who spent his later years frustrated at his inability to change the world, would no doubt be astounded to see what a vast influence his thought and writings have had, though he'd probably also be astounded to see, four hundred years after Galileo, how many people still believe that more weight causes an object to fall faster. Wells appears as a principal character in our next Sherlock Holmes case, an adventure like something right out of a scientific romance.

Our visitor was perhaps twenty-eight: a short, broad-shouldered young man, a little prone to fat, the voice high and thin, and he moved with a bright, bird-like bounce. His face, under thinning hair, was pale-perhaps he was consumptive-and his blue eyes were striking, wide and dreaming. He could hardly have presented a greater contrast, physically and in his manner, to my friend Holmes. And yet his conversation sparked with Holmes's, as if their two minds were poles of some huge electrical battery.

This visitor had presented Holmes with a set of rather grainy photographs, taken with one of the New York Kodaks which are so popular. Holmes was inspecting these with his lens. The visitor, with some malicious glee, was challenging Holmes to deduce, from the evidence of each photograph, the elements of some unusual situation, after the manner of a parlour game. Holmes had just finished with a blurred image of some withered white flowers. I studied this for myself, and could see little untoward about the flowers, although I could not immediately place their natural order-perhaps it was the genus Malva-for instance, the shape of the gynoecium, clearly visible, was rather unusual. Holmes appeared rather irritated by this harmless image, and had passed on to the next, while his young visitor was grinning. "I'm not surprised he made nothing of it. The apparatus of a classic hoaxer!" he told me.

Holmes passed me the next print. "See here, Watson. What can you make of that?"

This appeared more promising-and, I observed, the visitor was somewhat more serious about it. At first glance it seemed to me an undistinguished portrait of a commonplace luncheon party-although it was set in unusual surroundings, the table and guests being all but engulfed by bulky electrical equipment, wires and cylinders and coils and cones, and in the background I could make out the fittings of a workshop: a steam lathe, metal turners, acetylene welding equipment, a sheet-metal stamp and the like. I ventured, "I observe that our visitor this evening was a guest at the lunch. I do not know these others-"

"They are the Brimicombes, of Wiltshire," said the visitor. "My hosts that day: two brothers, Ralph and Tarquin. Ralph is an old college friend of mine. The brothers work together-or did so-on mechanical and electrical inventions."

"It was a sunny day," I said. "I see a splash of light here on the tablecloth, just behind the dish containing this handsome sausage."

"Yes," said Holmes with tolerant patience, "but what of the sausage itself?"

I looked again. The sausage sat on its own plate, the centrepiece of the meal. "It is a succulent specimen. Is it German?"

Holmes sighed. "Watson, that is no sausage, German or otherwise. It is evidently a prank, of dubious taste, served on their guests by these Brimicombes."

The visitor laughed. "You have it, Mr Holmes. You should have seen our faces when that giant concoction crawled off its plate and across the tablecloth!"

"A man of your profession should recognise the beast, Watson. It is an aquatic annelid, of the suctorial order Hirudinea, employed for the extraction of blood-"

"Great Heaven," I cried, "it is a giant leech!"

"You cannot see the colour in the Kodak," said the visitor, "but you should know it was a bright red: as red as blood itself."

"But how can this be, Holmes? Is it some freak of nature?"

"Of nature-or Man's science," Holmes mused. "Consider the influences acting on that wretched leech. It is drawn towards flatness by the force of the gravity of the Earth; that much we know. And its collapse to a pancake is resisted only by its internal strength. But it is hard to believe a creature as gross as this specimen would even be able to sustain its own form. Why, then, has it evolved such a magnitude? What gives it the strength to hold itself up, to move?" He eyed his visitor sharply. "Or perhaps we should ask, what is reducing the force which drags it down?"

The visitor clapped his hands in delight. "You have it, sir!"

Holmes handed back the photograph. "Indeed. And perhaps you might care to set out the particulars of the case."

Confused, I asked, "Are you so sure you have a case at all, Holmes?"

"Oh, yes," he said gravely. "For did our visitor not speak of the work of these Brimicombe brothers in the past tense? Evidently something has disturbed the equilibrium of their fraternal lives; and you would not be here, sir, if that were not something serious."

"Indeed," was the reply, and now the visitor was solemn. "There could be nothing more serious, in fact: my visit here was motivated by the death of the elder brother, Ralph, in unusual circumstances-circumstances deriving from the more obscure corners of the physical sciences!"

I asked, "Is it murder?"

"The local coroner does not think so. I, however, am unsure. There are puzzling features-inconsistencies-and so I have come to you, Mr Holmes-I am a journalist and author, not a detective."

I smiled. "In fact, sir, I already know your occupation."

He seemed surprised. "Forgive me. We have not been introduced."

"No introduction is necessary, nor was any deep deduction on my part. Your portrait has been as common enough this year."

He looked flattered. "You know my work?"

"As it has been featured in the Pall Mall Budget, The National Observer and elsewhere. I am a great admirer of your scientific romances." I extended my hand. "It is good to meet you, Mr Wells!"

Holmes agreed to travel with Wells to the Brimicombe home, near Chippenham, and he prevailed on me to accompany him, despite my reluctance to leave London, so close was I to my bereavement. But Holmes persisted, kindly. "You know how few of my cases involve the deeper mysteries of science, Watson. Perhaps this will be a suitable candidate for your casebook! It will be quite like old times." And so it was, the very next day, that I found myself with my valise clambering aboard the 10.15 from Paddington Station. We had the carriage to ourselves, Holmes, Wells and I. Holmes wrapped himself in his grey travelling-cloak and stretched out his long legs on the cushioned seat, as Wells, in his thin, piping voice, set out the full details of the case for us.

"I have known Ralph Brimicombe since we both attended the Normal School of Science in the '80s," he began, "and I remained in friendly contact with him until his recent death. He was a rather dream-like, remote figure-oddly impractical in the details of everyday life-to the extent that I was somewhat surprised when he married, when still a student at the Normal School. But his mind always sparked with creative energy. His subjects at the School were Astronomy, Astro-physics-all that sort of thing-along with Electricity and Magnetism. Even as a student he began to develop intriguing ideas about the coupling, as he put it, between electricity and gravity. Our theories of gravity were long due for an overhaul, he claimed. And perhaps there could even be practical applications. He was a delight to debate with!-you can imagine how I found him a soul-mate."

Holmes asked, "A coupling?"

"Gravity, as you know, is that force which imbues our bodies with weight. Ralph became convinced that the gravity of a large mass such as the Earth could be mitigated by a suitable arrangement of large currents and magnetic fluxes. Mitigated, or reduced."

"Reduced?" I said. "But if that were true, the commercial possibilities would be enormous. Think of it, Holmes. If one could reduce the weight of freight goods, for example-"

"Oh, to hang with commerce and freight!" Wells exclaimed. "Doctor Watson, Ralph Brimicombe claimed to have found a way to have removed the influence of gravity altogether. Without gravity, one could fly! He even claimed to have built a small capsule, and flown himself-alone, mind you, and without witnesses-all the way to the Moon. He showed me injuries which he said were due to an exhaustion of his food and water, an exposure to the Rays of Space, and burns from the lunar Vacuum. And he gave me a small vial, of what he claimed was Moon dust, as 'proof' of his journey. I have it about me." He patted his pockets.

Holmes raised a thin eyebrow. "And did you believe these claims?"

Wells hesitated. "Perhaps I wished to. But not entirely. Ralph was never above exaggerating his achievements, so impatient was he for acceptance and prestige.

"But I run ahead of my account. Ralph, for all his ability, could only scrape through the examinations at the Normal School, so distracted did he become by his gravitational obsession. After that, no respectable institution would take him on, and no journal would publish the revised theories and partial experimental results he claimed." Wells sighed. "Perhaps Ralph's greatest tragedy was the untimely death of his father, some months after he left the Normal School. The father had made a fortune in the Transvaal, and had retired to Chippenham, only to die of recurrent malaria. He left everything, with few tiresome legal complications, to his two sons: Ralph, and the younger Tarquin. This sudden legacy made Ralph a rich man. No longer did he need to convince peers of the value of his work. Now, he could plough a lone furrow, wherever it might take him.

"Ralph returned to Wiltshire, and devoted himself to his studies. He privately published his results which-while of great interest to students of the esoteric like myself-were roundly and rudely rejected by other scientists."

"And what of Tarquin?" Holmes asked.

"I knew Tarquin a little. I never much liked him," Wells said. "He was quite a contrast to Ralph. Full of vanity and self-regard, and not nearly so intelligent, though he has some smattering of an education, and, as I understand it, a crude grasp of his brother's accomplishments. Tarquin squandered his own inheritance in trying to follow his father's footsteps in Southern Africa, failed roundly, and came home pursued by debtors. Eventually his brother took him on as a species of senior assistant. Tarquin acquired equipment for Ralph's experiments, arranged apparatus and so forth. But even in this he proved less than competent, and Ralph was forced to demote him, effectively, to work as subordinate to Ralph's own engineer, a stolid local chap called Bryson."

I remarked, "It looked as if your lunch party took place in the midst of Ralph's apparatus."

"Yes." Wells smiled. "He was fond of such spectaculars. And I must describe the purpose of that apparatus to you, for it will be of significance to your investigation.

"I have mentioned Ralph's attempts-partially successful, he claimed-to nullify gravity. But this proved possible only over a small volume. To extend his abilities-to build greater ships which might carry teams of men across the Void of Space-Ralph pursued studies of more subtle aspects of the gravitational phenomenon, notably the Equivalence between Inertial and Gravitational Mass. You see-"

I held up my hands. "I cannot speak for Holmes, but I am already baffled, Mr Wells. I know nothing of gravity, save for its slow dragging at the lower spines and arches of my patients."

"Let me explain by analogy. Mr Holmes, can I trouble you for some coins? A sovereign and a farthing should do-there. Thank you." He held the two coins over the carriage floor. "Look here, Watson. The sovereign is considerably heavier than the farthing."

"That is clear enough."

"If I release these coins simultaneously they will fall to the floor."

"Of course."

"But which will arrive first?-the farthing, or the sovereign?"

Holmes looked amused. I felt that embarrassed frustration which sometimes comes over me when I cannot follow some elaborated chain of reasoning. And yet, the case seemed simple enough. "The sovereign," I said. "Disregarding the resistance of the air, as the heavier of the two-"

Wells released the coins. They fell side by side, and struck the carriage floor together.

"I am no expert in Gravitational Mechanics," Holmes chided me, "but I do remember my Galileo, Watson."

Wells retrieved the coins. "It is all to do with various Laws of Newton. Under gravity, all objects fall at the same rate, regardless of their mass. Think of it this way, Watson: if you were in a lift, and the cable snapped, you and the lift would fall together. You would feel as if you were floating, inside the lift car."

"Briefly," I said, "until the shaft floor was reached."

"Indeed. It was precisely this effect which Ralph strove to study. In the luncheon chamber I showed you, with an apparatus of coils and cones and loops, he managed to create a region of space in which-as Ralph showed us with a series of demonstrations and tricks-thanks to the adjustment of the gravity field with electrical energy, heavier objects did indeed fall more rapidly than the lighter! This was the 'Inertial Adjustor,' as Ralph called it. It sounds a trivial feat-and is much less spectacular than shooting a capsule at the Moon-but it is nonetheless quite remarkable. If true."

"But you doubt it," Holmes said. "In fact, you employed the word 'tricks.'"

Wells sighed. "Dear old Ralph. I do not think he lied deliberately. But his optimism and energy for his own work would sometimes cloud his critical judgement. And yet the acceptance of his theories and devices-particularly his Inertial Adjustor-were central to his life, his very mental state."

"So central, in fact, that they led to his death."

"Indeed," said Wells. "For it was in that very chamber, within the Inertial Adjustor itself, that Ralph Brimicombe died-or was killed!"

It was after three o'clock when at last we reached Chippenham. We took a trap to the Brimicombe residence, a well-appointed affair of the Regency period which had been rather allowed to run to seed.

Holmes stepped from the trap and sniffed the air. He walked to the verge of the gravel drive and inspected the lawn grass, which I noticed was discoloured here and there by small brown circles, samples of which Holmes disturbed gently with the toecap of his boot.

A young man came out to meet us: tall and blond, his eyes a vacuous grey. He greeted Wells rather contemptuously-"If it isn't Bertie Wells!"-and introduced himself as Tarquin Brimicombe. We were escorted into the house and introduced to various others of the household. Jane, the widow of Ralph, was a tall, willowy woman who was younger than I expected, and her eyes were puffy as if from habitual crying; and Jack Bryson, Ralph's trusted engineer, bald of head and square of shoulder, appeared puzzled and ill at ease.

Holmes smiled at the widow with the sudden kind warmth perceived in him only by those who know him well, and which made my own heart rise, for I sympathised all too well with this lady's loss of her spouse. "Madam," said Holmes. "My very deepest sympathies."

"Thank you."

"And how is your labrador? Is she still ill?"

She looked confused. "Convalescing, I think. But how did you know?"

He inclined his head. "The patches on the lawn are clear evidence of a canine-and a bitch at that, for it is well known that a bitch will empty her bladder in a single spot, so depositing enough material to damage the grass, whereas a dog will release small quantities of liquid to mark his territory. I have a monograph in draft on the excretory habits of other domestic and urban wildlife. And as to her breed, the golden hairs adhering to your lower skirt are evidence enough of that, Mrs Brimicombe, as well as to your affection for the animal."

"Oh! But you knew of her illness?"

Holmes smiled sadly. "If she were well, I should expect her to come bounding out with you to challenge three such rough strangers as ourselves."

Wells clucked admiringly.

Jane Brimicombe waved a hand rather vaguely. "The illness is baffling to the vets. Sheba has some difficulty standing, and her bones are oddly brittle and prone to breaking. She was involved in experiments of Ralph's, you see, and-"

"I know," said Holmes.

"You do? But how?"

But Holmes did not answer. Instead he drew me aside. "Watson, I'd be grateful if you'd take a sample of the droppings from the wretched animal. Perform some kind of assay."

"Looking for what?"

"My dear fellow, if I told you that I might prejudice your results."

"And how am I supposed to achieve it? I am no vet, Holmes, still less a chemist. And we are a long way from town."

"I am sure you will find a way." Now he turned back to Mrs Brimicombe, and with deft skill, began to draw her out on the subject of her husband's demise.

"It was early morning. I was in the kitchen. Mr Bryson had just come in, having completed an hour's work already." She avoided the eyes of the engineer Bryson, I observed, and the soubriquet "Mr Bryson" did not come naturally to her lips. "We would often eat together, though Mr Bryson was always busy and in a rush. For breakfast he would eat one fried egg and a slice of toast."

"Egg?" asked Holmes. "What egg?"

"From the small coop we keep at the back of the house," Mrs Brimicombe said.

Holmes asked, "And how was the egg that day?"

Mrs Brimicombe dropped her gaze. "Mr Bryson remarked on its fine flavour. I recall Tarquin-Mr Brimicombe-brought them in from the coop, fresh that morning."

"Really?" Holmes turned an appraising eye on the brother, Tarquin. "Sir, are you in the habit of visiting the hen-house?"

Tarquin blustered. "I should say not-I used to help Millie with the eggs as a boy-it was a fine morning-can't a fellow act on impulse once in a while?"

Wells was growing impatient. "Look here, Holmes, why are you so interested in this business of a breakfast egg? Isn't it rather trivial? And can't you see it's causing the lady distress?"

I knew my friend well enough to understand that nothing is truly trivial-there was surely some pattern to his close questioning which none of us could discern-but Mrs Brimicombe was, indeed, becoming agitated, and so Holmes dropped his interrogation of her and allowed Tarquin to lead us through to the drawing room, where he provided sherry. "I have to say I did not invite Mr Wells here," he said. "At first I regarded his interest and his insistence on coming here as an intrusion into my family's grief. But my view has changed, as I have meditated on the recent tragic events. Now that you are here I am glad, Mr Holmes. I need your help."

"Why so?"

"Ralph's life was not lost. Mr Holmes, it was stolen. After the coroner's report, the police are not interested. I was not sure who to approach, and-"

Holmes held up his hands. "Tell me exactly what you mean."

His pale blue eyes were fixed on Holmes. "Ralph's death was no accident."

"Who was present in the Inertial Adjustor chamber at the time of the incident?"

"Only two of us. Myself and Bryson, my brother's engineer."

"Then," I said doggedly, "you are accusing Bryson-"

"-of murder. That is right, Doctor. Jack Bryson killed Ralph."

Holmes is always impatient to visit the scene of a crime, and Wells was clearly enjoying the whole affair hugely; and so we agreed to accompany Tarquin at once to the Inertial Adjustor chamber, the site of Ralph Brimicombe's death.

We had a walk of a hundred yards or so across the grounds to an out-building. By now it was late afternoon. I took deep breaths of wood-scented air, trying to clear my head after the fumes of the train. I could hear the clucking of chickens, evidently from the hen coop Mrs Brimicombe had mentioned.

I was startled when an insect no less than six inches long scuttled across my path, disturbed by my passage. At first I thought it must be a cockroach, but on closer observation, to my astonishment, it proved to be an ant. It ran with a blur of legs towards an anthill-a gigantic affair, towering over the lower trees like an eroded monument. "Good Lord, Holmes," I said. "Did you observe that? What was it, do you think, some tropical species?"

He shook his head. "Ralph Brimicombe was no collector of bugs. Given the pattern of events here I have expected some such apparition."

"You expected it? But how?"

"Surely that repulsive red leech of Wells's was enough of a clue. But in any event-all in good time, my dear friend."

We reached a laboratory, of crude but functional construction, and I ran my eyes for the first time over the gruesome details of the Inertial Adjustor itself. The main chamber was fifty feet tall; and it was dominated by the stupendous wreck of a vehicle. This latter had been a cone some fifteen feet in length and perhaps as broad, but it was without wheels, sails or runners: for its purpose, Tarquin told us in all seriousness, had been to fly, freed of gravity by Ralph's invention, into Space! To simulate to its occupant some of the stresses and impacts to be expected during a flight, the vessel had been suspended in midair, at the heart of the Inertial Adjustor itself, by a series of cables and gimbals.

Now the cables dangled uselessly. The ship, after an evident fall, had gouged a crater a few inches deep in the floor; it looked as if a great hammer had pounded into the concrete. And it was inside this capsule, this aluminium dream of flight in Space, that Ralph Brimicombe had fallen to his death.

Around the massive wreck were arrayed the elements of the Inertial Adjustor apparatus: coils and armatures, cones of paper and iron, filamented glass tubes, the poles of immense permanent magnets, great shadowy shapes which reached up and out of my vision, the whole far beyond my comprehension. There were besides some more mundane elements: drafting tables laden with dusty blueprints, lathes and vices and tools, chains for heavy lifting suspended from the ceiling.

I observed, however, that the fall of the vehicle had done a pretty damage to the equipment in that chamber, surely rendering it inoperative.

My eye was caught by a series of small glass-walled cages, beside a dissecting table. There was a series of leeches in stoppered jars, none of them as big as the specimen in Well's photograph, but all so large they were indeed unable even to sustain their characteristic tubular forms; they lay against the thick glass at the bottom of their jars, in evident distress. Among the higher animals imprisoned here there were mice, but of an unusual morphology, with remarkably long and spindly limbs. Some of the mice, indeed, had trouble supporting their own weight. I remarked on this to Holmes, but he made no comment.

Holmes, Wells and I stepped over the crater's cracked lip and walked around the wrinkled aluminium of the capsule's hull. The fall had been, I judged, no more that ten feet-a drop that seemed barely enough to injure, let alone kill a man-but it had been sufficient to compress the ship's entire structure by perhaps a third of its length.

"How terrible," Wells said. "It was in this very spot-suspended under the glittering hull of Brimicombe's Moon ship itself-that he bade us dine."

"Then perhaps you have had a lucky escape," said Holmes grimly.

"The workmen have cut the capsule open." Tarquin indicated a square rent in the wall, a shadowed interior beyond. "The body was removed after the police and the coroner studied the scene. Do you want to look in there? Then I will show you where Bryson and I were working."

"In a minute," said Holmes, and he studied the corpse of the fantastic ship with his usual bewildering keenness. He said, "What sort of man was Ralph? I see evidence of his technical abilities, but what was it like to know him-to be related, to work with him?"

"Among those he worked with, Ralph stood out." Tarquin's face was open and seemed untainted by envy. "When we were children, Ralph was always the leader. And so it remained as we entered adult life."

Wells remarked, "I never knew if you liked him."

Tarquin's eyes narrowed. "I cannot answer that, Bertie. We were brothers. I worked for him. I suppose I loved him. But we were also rivals, throughout life, as are most brothers."

Holmes asked bluntly, "Do you stand to benefit from his death?"

Tarquin Brimicombe said, "No. My father's legacy will not be transferred to me. Ralph made out his own will, leaving his assets to his wife; and there is no love lost between the two of us. You may check with the family solicitors-and with Jane-to verify these claims. If you are looking for a murder motive, Mr Holmes, you must dig deeper. I will not resent it."

"Oh, I shall," muttered Holmes. "And Ralph Brimicombe is beyond resenting anything. Come. Let us look in the capsule."

We stepped over the shattered concrete to the entrance cut in the capsule wall. A small lamp had been set up, filling the interior with a sombre glow. I knew that the body-what was left of it-had been taken away for burial, but the craft had not been cleaned out. I dropped my eyes to the floor, expecting-what? a dramatic splash of blood?-but there were only a few irregular stains on the burst upholstery of the aviator's couch, where Ralph had been seated at the moment of his extinguishing. There was surprisingly little damage to the equipment and instrumentation, the dials and switches and levers evidently meant to control the craft; much of it had simply been crushed longways where it stood.

But there was a smell, reminiscent to me of the hospitals of my military service.

I withdrew my head. "I am not sure what I expected," I murmured. "More… carnage, I suppose."

Tarquin frowned thoughtfully; then he extended his index finger and pointed upwards.

I looked up.

It was as if a dozen bags of rust-brown paint had been hurled into the air. The upper walls and ceiling of the ship, the instruments, dials and switches that encrusted the metal, even the cabin's one small window: all were liberally coated with dried blood.

"Good Lord," said Wells, and his face blanched. "How did that get up there?"

Tarquin said, "The coroner concluded the vessel must have rolled over as it fell, thus spreading my brother's blood through its interior."

As we moved on, Wells muttered to me, "Such a size of ship, rolling over in ten feet? It hardly seems likely!"

I agreed with the young author. But Holmes would make no remark.

Tarquin took us to a gantry which crossed the chamber above the wrecked ship. We stood a few inches from a bank of cables, many of which showed necking, shearing and cracking; they had clearly snapped under extreme pressure. But one cable-a fat, orange-painted rope as thick as my arm-had a clean, gleaming termination. At my feet was a gas cutting kit, and a set of protector goggles. It seemed absurdly obvious, like a puzzle set by a child, that a load-bearing cable had been cut by this torch!

Tarquin said, "Not all the cables supported the weight of the ship. Some carried power, air for the passenger, and so forth."

Holmes said, "You say you were both working up here, on this gantry, when the accident occurred? Both you and Bryson?"

"Yes. We were doing some maintenance. We were the only people in the chamber-apart from Ralph, of course. He was inside the vessel itself, performing calculations there."

Holmes asked, "And the Inertial Adjustor was in operation at the time?"

"It was."

I pointed to the fat orange cable. "Was that the main support?"

He nodded. "Although I did not know that at the time."

"And it has been cut with this torch?"

"That is right," he said evenly. He leaned against the gantry rail, arms folded. "The flame sliced clean through, like ice under a hot tap. When the big one went the others started to stretch and snap. And soon the ship fell."

"And Bryson was using the torch? Is that what you are saying?"

"Oh, no." He looked mildly surprised at Wells's question. "I was doing the cutting. I was working it under Bryson's supervision."

I demanded, "But if you were working the torch, how can you accuse Bryson of murder?"

"Because he is responsible. Do you not see? He told me specifically to cut the orange cable. I followed his instructions, not knowing that it was supporting the capsule."

"You said you are trained to know every detail of the ship, inside and out."

"The ship itself, yes, Doctor. Not the details of this chamber, however. But Bryson knew."

Wells remarked, "But it must have taken minutes to cut through that cable. Look at its thickness! Did Bryson not see what you were doing and stop you?"

"Bryson was not here," Tarquin said coldly. "As you have heard, he was taking breakfast with my sister-in-law, as was their wont. You see, gentlemen," he went on, a controlled anger entering his voice, "I was just a tool Bryson used to achieve his ends. As innocent as that torch at your feet."

Wells stared at the torch, the ripped cables. "Tarquin, your brother knew Bryson for years. He relied on him utterly. Why would Bryson do such a thing?"

He straightened up, brushing dust from his jacket. "You must ask him that," he said.

The next step was obvious to us all: we must confront the accused.

And so we returned to the drawing room of the main house, and confronted the wretched Bryson. He stood on the carpet, his broad, strong hands dangling useless at his side, his overalls oil-stained and bulging with tools. He was, on Wells's testimony, solid, unimaginative, able-and utterly reliable. I could not avoid a sense of embarrassment as Holmes summarised to Bryson the accusation levelled against him.

Jack Bryson hung his head and ran his palm over his scalp. "So you think I killed him," he said, sounding resigned. "That is that, then. Are you going to call in the police?"

"Slow down." Holmes held his hands up. "To begin with, I do not know what possible reason you could have for wanting to harm Ralph Brimicombe."

"It was Jane," he said suddenly.

Wells frowned. "Brimicombe's wife? What about her?"

"She and I-" He hesitated. "I may as well tell you straight; you will find out anyway. I do not know if you would call it an affair. I am a good bit older than she is-but still-Ralph was so distant, you know, so wrapped up in his work. And Jane-"

"-is a woman of warmth and devotion," Holmes said gently.

Bryson said, "I knew Jane a long time. The closeness-the opportunity. Well. So there is your motive, Mr Holmes. I am the lover who slew the cuckolded husband. And my opportunity for murder is without question."

I found it painful to watch his face. There was no bitterness there, no pride: only a sour resignation.

Wells turned to Holmes. "So," he said, "the case is resolved. Are you disappointed, Holmes?"

For answer he filled and lit his pipe. "Resolved?" he said softly. "I think not."

Bryson looked confused. "Sir?"

"Do not be so fast to damn yourself, man. You are a suspect. But that does not make you a murderer: in my eyes, in the eyes of the law, or in the eyes of God."

"And will the courts accept that? I am resigned, Mr Holmes: resigned to my fate. Let it be."

To that dignified acceptance, even Holmes had nothing to say.

Holmes ordered Bryson to take us through the same grisly inspection tour as Tarquin. Soon we were walking around the wreck once more. Unlike Tarquin, Bryson had not seen this place since the day of the accident; his distress was clear as he picked his way through the remnants of the support cables. He said: "The fall took a long time, even after the main support was severed. The noise of the shearing cables went on and on, and there was not a thing I could do about it. I ran out for help, before the end. And when we heard Ralph had been killed-" Now he turned his crumpled face to Holmes's. "No matter who you call guilty in the end, Mr Holmes, I am the killer. I know that. This is my domain; Ralph Brimicombe's life was in my hands while he was in this room, and I failed-"

"Stop it, man," Holmes said sharply. "This self-destructive blame is hardly helpful. For now, we should concentrate on the facts of the case."

Holmes took Bryson to the entrance cut in the capsule. With obvious reluctance the engineer picked his way to the crude doorway. The light inside cast his trembling cheeks in sharp relief. I saw how he looked around the walls of the cabin, at the remnants of the couch on the floor. Then he stood straight and looked at Holmes, puzzled. "Has it been cleaned?"

Holmes pointed upwards.

Bryson pushed his neck through the doorway once more and looked up at the ceiling of the capsule. When he saw the human remains scattered there he gasped and stumbled back.

Holmes said gently, "Watson, would you-"

I took Bryson's arm, meaning to care for him, but he protested: "I am all right. It was just the shock."

"One question," Holmes said. "Tell me how the cable was cut."

"Tarquin was working the torch," he began. "Under my direction. The job was simple; all he had to do was snip out a faulty section of an oxygen line."

"Are you saying Ralph's death was an accident?"

"Oh, no," Bryson said firmly. "It was quite deliberate." He seemed to be challenging us to disbelieve him.

"Tell me the whole truth," said Holmes.

"I was not watching Tarquin's every move. I had given Tarquin his instructions and had left to take breakfast before progressing to another item of work."

"What exactly did you tell him to do?"

He considered, his eyes closing. "I pointed to the oxygen line, explained what it was, and showed him what he had to do. The air line is a purple-coded cable about a thumb's-width thick."

"Whereas the support cables-"

"Are all orange coded, about so thick." He made a circle with his thumbs and middle fingers. "It is hard-impossible-to confuse the two."

"Did you not see what he was doing?"

"I was at breakfast with Mrs Brimicombe when it happened. I expected to be back, however."

"Why were you not?"

He shrugged. "My breakfast egg took rather longer to cook than usual. I remember the housekeeper's apology."

Wells tutted. "Those wretched eggs again!"

"At any event," Bryson said, "I was only gone a few minutes. But by the time I returned Tarquin had sliced clean through the main support. Then the shearing began."

"So you clearly identified the gas line to Tarquin."

"I told you. I pointed to it."

"And there is no way he could have mixed it up with the support cable?"

He raised his eyebrows. "What do you think?"

I scratched my head. "Is it possible he caught the support somehow with the torch, as he was working on the gas feed?"

He laughed; it was a brief, ugly sound. "Hardly, Doctor. The support is about four feet from the air line. He had to turn round, and stretch, and keep the torch there, to do what he did. We can go up to the gantry and see if you like." He seemed to lose his confidence. "Look, Mr Holmes, I do not expect you to believe me. I know I am only an engineer, and Tarquin was Ralph's brother."

"Bryson-"

"But there is no doubt in my mind. Tarquin quite deliberately cut through that support, and ended his brother's life."

There we left our inquiries for the day.

I fulfilled Holmes's request regarding the dog Sheba. On a cursory inspection I found the poor animal's limbs to be spindly and crooked from so many breaks. I collected a sample of her urine and delivered it to the Chippenham general hospital, where an old medical school friend of mine arranged for a series of simple assays. He had the results within the hour, which I tucked into my pocket.

I rejoined my companions, who had retired to the "Little George" hostelry in Chippenham for the evening. They had been made welcome by a broad-bellied, white-aproned barman, had dined well on bread and cheese, and were enjoying the local ale (though Holmes contented himself with his pipe), and talking nine to the dozen the while.

"It is nevertheless quite a mystery," said Wells, around a mouthful of bread. "Has there even been a murder? Or could it all be simply some ghastly, misunderstood accident?"

"I think we can rule that out," said Holmes. "The fact that there are such conflicts between the accounts of the two men is enough to tell us that something is very wrong."

"One of them-presumably the murderer-is lying. But which one? Let us follow it through. Their accounts of the crucial few seconds, when the cable was cut, are ninety per cent identical; they both agree that Bryson had issued an instruction to Tarquin, who had then turned and cut through the support. The difference is that Bryson says he had quite clearly told Tarquin to cut through the air line. But Tarquin says he was instructed, just as clearly, to slice through what turned out to be the support.

"It is like a pretty problem in geometry," went on Wells. "The two versions are symmetrical, like mirror images. But which is the original and which the false copy? What about motive, then? Could Tarquin's envy of his brother-plain for all to see-have driven him to murder? But there is no financial reward for him. And then there is the engineer. Bryson was driven to his dalliance with Jane Brimicombe by the tenderness of his character. How can such tenderness chime with a capability for scheming murder? So, once again, we have symmetry. Each man has a motive-"

Holmes puffed contentedly at his pipe as Wells rattled on in this fashion. He said at last, "Speculations about the mental state of suspects are rarely so fruitful as concentration on the salient facts of the case."

I put in, "I'm sure the peculiar circumstances of the death had something to do with the nature of the Inertial Adjustor itself, though I fail to understand how."

Holmes nodded approvingly. "Good, Watson."

"But," said Wells, "we don't even know if the Adjustor ever operated, or if it was another of Ralph's vain boasts-a flight of fancy, like his trip to the Moon! I still have that vial of Moon dust about me somewhere-"

"You yourself had lunch in the chamber," Holmes said.

"I did. And Ralph performed little demonstrations of the principle. For instance: he dropped a handful of gravel, and we watched as the heaviest fragments were snatched most rapidly to Earth's bosom, contrary to Galileo's famous experiment. But I saw nothing which could not be replicated by a competent conjurer."

"And what of the mice?"

Wells frowned.

"They were rather odd, Mr Wells," I said.

"We can imagine the effect of the distorted gravity of that chamber on generations of insects and animals," Holmes said. "A mouse, for instance, being small, would need the lightest of limbs to support its reduced weight."

Wells saw it. "And they would evolve in that direction, according to the principles of Darwin -of course! Succeeding generations would develop attenuated limbs. Insects like your ant, Watson, could grow to a large size. But larger animals would be dragged more strongly to the ground. A horse, for example, might need legs as thick as an elephant's to support its weight."

"You have it," said Holmes. "But I doubt if there was time, or resource, for Ralph to study more than a generation or two of the higher animals. There was only his wife's unlucky labrador to use as test subject. And when Watson opens the envelope in his pocket, he will find the assay of the urine samples from that animal to display excessive levels of calcium."

That startled me. I retrieved and opened the envelope, and was not surprised-I know the man!-to find the results just as Holmes had predicted.

"The calcium is from the bones of the animal," Holmes said. "Trapped by Ralph in a region in which it needed to support less weight, the bitch's musculature and bone structure must have become progressively weaker, with bone calcium being washed out in urine. The same phenomenon is observed in patients suffering excessive bed rest, and I saw certain indications of the syndrome in those discoloured patches of lawn."

"Then the means of his death," Wells said, "must indeed be related to Ralph Brimicombe's successful modification of gravity itself."

"Certainly," said Holmes. "And similarly related are the motive behind the crime, and the opportunity."

Wells grew excited. "You've solved it, Holmes? What a remarkable man you are!"

"For the morrow," Holmes said. "For now, let us enjoy the hospitality of the landlord, and each other's company. I too enjoyed your Time Machine, Wells."

He seemed flattered. "Thank you."

"Especially your depiction of the crumbling of our foolish civilisation. Although I am not convinced you had thought it through far enough. Our degradation, when it comes, will surely be more dramatic and complete."

"Oh, indeed? Then let me set you a challenge, Mr Holmes. What if I were to transport you, through time, to some remote future-as remote as the era of the great lizards-let us say, tens of millions of years. How would you deduce the former existence of mankind?"

My friend rested his legs comfortably on a stool and tamped his pipe. "A pretty question. We must remember first that everything humans construct will revert to simpler chemicals over time. One must only inspect the decay of the Egyptian pyramids to see that, and they are young compared to the geologic epochs you evoke. None of our concrete or steel or glass will last even a million years."

"But," said Wells, "perhaps some human remains might be preserved in volcanic ash, as at Pompeii and Herculaneum. These remains might have artifacts in close proximity, such as jewellery or surgical tools. And geologists of the future will surely find a layer of ash and lead and zinc to mark the presence of our once-noble civilisation-"

But Holmes did not agree-

And on they talked, H G Wells and Sherlock Holmes together, in a thickening haze of tobacco smoke and beer fumes, until my own poor head was spinning with the concepts they juggled.

The next morning, we made once more for the Brimicombe home. Holmes asked for Tarquin.

The younger Brimicombe entered the drawing room, sat comfortably and crossed his legs.

Holmes regarded him, equally at his ease. "This case has reminded me of a truism I personally find easy to forget: how little people truly understand of the world around us. You demonstrated this, Watson, with your failure to predict the correct fall of my sovereign and farthing, even though it is but an example of a process you must observe a hundred times a day. And yet it takes a man of genius-a Galileo-to be the first to perform a clear and decisive experiment in such a matter. You are no genius, Mr Brimicombe, and still less so is the engineer, Bryson. And yet you studied your brother's work; your grasp of the theory is the greater, and your understanding of the behaviour of objects inside the Inertial Adjustor is bound to be wider than poor Bryson's."

Tarquin stared at Holmes, the fingers of one hand trembling slightly.

Holmes rested his hands behind his head. "After all, it was a drop of only ten feet or so. Even Watson here could survive a fall like that-perhaps with bruises and broken bones. But it was not Ralph's fall that killed him, was it? Tarquin, what was the mass of the capsule?"

"About ten tons."

"Perhaps a hundred times Ralph's mass. And so-in the peculiar conditions of the Inertial Adjustor-it fell to the floor a hundred times faster than Ralph."

And then, in a flash, I saw it all. Unlike my friendly lift cabin of Wells's analogy, the capsule would drive rapidly to the floor, engulfing Ralph. My unwelcome imagination ran away with the point: I saw the complex ceiling of the capsule smashing into Ralph's staring face, a fraction of a second before the careening metal hit his body and he burst like a balloon…

Tarquin buried his eyes in the palm of his hand. "I live with the image. Why are you telling me this?"

For answer, Holmes turned to Wells. "Mr Wells, let us test your own powers of observation. What is the single most startling aspect of the case?"

He frowned. "When we first visited the Inertial Adjustor chamber with Tarquin, I recall looking into the capsule, and scanning the floor and couch for signs of Ralph's death."

"But," Holmes said, "the evidence of Ralph's demise-bizarre, grotesque-were fixed to the ceiling, not the floor."

"Yes. Tarquin told me to look up-just as later, now I think on it, you, Mr Holmes, had to tell the engineer Bryson to raise his head, and his face twisted in horror." He studied Holmes. "So, a breaking of the symmetry at last. Tarquin knew where to look; Bryson did not. What does that tell us?"

Holmes said, "By looking down, by seeking traces of Ralph on the couch, the floor, we demonstrated we had not understood what had happened to Ralph. We had to be shown-as had Bryson! If Bryson had sought to murder Ralph he would have chosen some other method. Only someone who has studied the properties of a gravity field changed by the Inertial Adjustor would know immediately how cutting that cable would kill Ralph."

Tarquin sat very still, eyes covered. "Someone like me, you mean?"

Wells said, "Is that an admission, Tarquin?"

Tarquin lifted his face to Holmes, looking thoughtful. "You do not have any proof. And there is a counter-argument. Bryson could have stopped me, before I cut through the cable. The fact that he did not is evidence of his guilt!"

"But he was not there," Holmes said evenly. "As you arranged."

Tarquin guffawed. "He was taking breakfast with my sister-in-law! How could I arrange such a thing?"

"There is the matter of Bryson's breakfast egg, which took unusually long to cook," Holmes said.

"Your egg again, Holmes!" Wells cried.

"On that morning," said Holmes, "and that morning alone, you, Mr Brimicombe, collected fresh eggs from the coop. I checked with the housekeeper. The eggs used for breakfast here are customarily a day or more old. As you surely learned as a child fond of the hens, Tarquin, a fresh egg takes appreciably longer to cook than one that is a day or more old. A fresh egg has a volume of clear albumen solution trapped in layers of dense egg white around the yolk. These layers make the egg sit up in the frying pan. After some days the albumen layers degenerate, and the more watery egg will flatten out, and is more easily cooked."

Wells gasped. "My word, Holmes. Is there no limit to your intelligence?"

"Oh," said Brimicombe, "but this is-"

"Mr Brimicombe," Holmes said steadily, "you are not a habitual criminal. When I call in the police they will find all the proof any court in the land could require. Do you doubt that?"

Tarquin Brimicombe considered for a while, and then said: "Perhaps not." He gave Holmes a grin, like a good loser on the playing field. "Maybe I tried to be too clever; I thought I was home clear anyway, but when I knew you were coming I decided to bluff you over Bryson to be sure. I knew about his involvement with Jane; I knew he would have a motive for you to pick up-"

"And so you tried to implicate an innocent man." I could see Holmes's cool anger building.

Wells said, "So it is resolved. Tell me one thing. Tarquin. If not for your brother's money, why?"

He showed surprise. "Do you not know, Bertie? The first aviator will be the most famous man in history. I wanted to be that man, to fly Ralph's craft into the air, perhaps even to other worlds."

"But," Wells said, "Ralph claimed to have flown already all the way to the Moon and back."

Tarquin dismissed this with a gesture. "Nobody believed that. I could have been first. But my brother would never have allowed it."

"And so," said Wells bitterly, "you destroyed your brother-and his work-rather than allow him precedence."

There was a touch of pride in Tarquin's voice. "At least I can say I gave my destiny my best shot, Bertie Wells. Can you say the same?"

The formalities of Tarquin Brimicombe's arrest and charging were concluded rapidly, and the three of us, without regret, took the train for London. The journey was rather strained; Wells, having enjoyed the hunt, now seemed embittered by the unravelling of the Brimicombe affair. He said, "It is a tragedy that the equipment is so smashed up, that Ralph's note-taking was so poor, that his brother-murderer or not-is such a dullard. It will not prove possible to restore Ralph's work, I fear."

Holmes mused, "But the true tragedy here is that of a scientist who sacrificed his humanity-the love of his wife-for knowledge."

Wells grew angry. "Really. And what of you, Mr Holmes, and your dry quest for fact, fact, fact? What have you sacrificed?"

"I do not judge," Holmes said easily. "I merely observe."

"At any rate," said Wells, "it may be many years before humans truly fly to the Moon-oh. I am reminded." He dug into a coat pocket and pulled out a small, stoppered vial. It contained a quantity of grey-black dust, like charcoal. "I found it. Here is the 'Moon dust' which Ralph gave me, the last element of his hoax." He opened the bottle and shook a thimbleful of dust into the palms of Holmes and myself.

I poked at the grains. They were sharp-edged. The dust had a peculiar smell: "Like wood smoke," I opined.

"Or wet ash," Wells suggested. "Or gunpowder!"

Holmes frowned thoughtfully. "I suppose the soil of the Moon, never having been exposed to air, would react with the oxygen in our atmosphere. The iron contained therein-it would be like a slow burning-"

Wells collected the dust from us. He seemed angry and bitter. "Let us give up this foolishness. What a waste this all is. How many advances of the intellect have been betrayed by the weakness of the human heart? Oh, perhaps I might make a romance of this-but that is all that is left! Here! Have done with you!" And with an impetuous gesture he opened the carriage window and shook out the vial, scattering dust along the track. Holmes raised an elegant hand, as if to stop him, but he was too late. The dust was soon gone, and Wells discarded the bottle itself.

For the rest of the journey to Paddington, Holmes was strangely thoughtful, and said little.