Some of the riddles were taken, in part, from Anglo-Saxon Riddles of the Exeter Book. A few were invented by me.
Thank you to Emily Meehan, Brittany Rubiano, and everyone at Disney for letting me play in this world and for making the process of writing this book so much fun. Thank you to Kelly Link, Cassandra Clare, Steve Berman, and Josh Lewis for quickly convening a workshop to help me fix the first draft. Thank you to Sarah Rees Brennan for all your great notes. And apologies to Ursula Grant, who would have given me great notes had I given her the chance. Thank you to my agent, Jo Volpe, for her encouragement and for figuring out an extremely tricky schedule. And huge thanks to my best beloveds, Theo and Sebastian, for making me endless cups of coffee and letting me hole up in my office to get this done.