On the whole, I disliked school, sitting in class, receiving instruction; information seemed to go in one ear and out the other. I could not be passive—I had to be active, learn for myself, learn what I wanted, and in the way that suited me best. I was not a good pupil, but I was a good learner, and in the Willesden library—and all the libraries that came later—I roamed the shelves and stacks, had the freedom to select whatever I wanted, to follow paths that fascinated me, to become myself. At the library I felt free—free to look at the thousands, tens of thousands, of books; free to roam and to enjoy the special atmosphere and the quiet companionship of other readers, all, like myself, on quests of their own.

Bird passes shelf after shelf, slotting his fingers into the spaces where removed books once stood. There are fewer missing here than at the public library, where some shelves had been more gap than books. But still nearly every shelf is missing one, sometimes more. He wonders who decided which books were too dangerous to keep, and who it was that had to hunt down and collect the condemned books, like an executioner, ferrying them to their doom. He wonders if it is his father.

She waits, holding her breath, but he says nothing more. All this time Bird’s gaze hasn’t left the city below, the dense milling swarm of it. One hand still rests half raised, as if he’s propping himself up on air, or trying to grasp the edge of the skyline. She waits, lets the moment breathe and drift, trusting it to find its own way to land.

Why did you leave, he says at last.

It is easier to ask these things up here, somehow, where everything except them is small and far away.

She spreads her arms wide, as if to dive, tips her head back, closes her eyes. The moonlight catches in her hair, frosting it with silvery glints. For a moment, frozen there, she looks like the figurehead of a ship, sailing boldly forward into strange new waters. Then her hands drop to her sides, and she turns back again.

I’ll tell you, she says. I’ll tell you everything. If you promise to listen.

She grew larger. From within, Bird thrummed against her: his heels the mallets, her belly the drum. She could feel his hiccups, a microscopic ping. When he turned over, she felt the movement inside her stillness. What’s it feel like, Ethan asked, wondrous, and she tried to explain: what the ocean floor felt as the waves rolled out, then in. The librarian slid another book across the counter toward her as she ventured farther and farther from shore.

All over the country, a scattered network of librarians would note this information, collating it with the Rolodex in their minds, cross-referencing it with the re-placed children they might have learned about. Some kept a running written list, but most, wary, simply trusted to memory. An imperfect system, but the brain of a librarian was a capacious place. Each of them had reasons of their own for taking this risk, and though most of them would never share these reasons with the others, would never even meet them face-to-face, all of them shared the same desperate hope of making a match, of sending a note back, sandwiched between pages, with a child’s new location.