The difficulty was in trying to make the time and place more real—all this happened more than a thousand years ago, and in a part of the world that we don’t usually learn much about. Set a story in Ancient Rome or 12th Century England, and the reader will most likely have a mental file of background information; medieval Kiev is pretty much a mystery.

The notion of basilisk images was something I’d had in mind ever since reading Douglas Hofstadter’s Gödel, Escher, Bach. Hofstadter’s favourite analogy for the impact of Gödel’s Theorem on mathematics is a music recording that can’t be played because its resonances destroy the playing mechanism.

I obediently spent my childhood writing little stories, until I reached that age when you dig in your heels and tell your parents you hate them and you’ll never, ever be what they want you to be. And I more or less ran away with the circus for the next twenty years.

A couple years ago when I was actively blogging, some editorial minion had complained about their slushpile being full of stories with titles that spoiled the ending mixed with time-travel stories about people trying to kill Hitler. I commented that maybe it wasn’t a good time to submit my story titled “The Cross-Time Accountants Fail to Kill Hitler Because Chuck Berry Does the Twist.”

I really wanted to write about this world I’d discovered, its rich, slow secrecy—its winter melancholy that turned gradually, then all at once, into an astoundingly fecund summer. To do that, I needed a plausible way for Molly to stay behind, to live reasonably well in an otherwise-abandoned version of the place. I hit upon a creeping apocalypse.