After that, we simply fell together. For the moment, they seemed content to follow. Nothing could flee forever.

This body lacked the inner sense of balance and acceleration that would have allowed me to gauge our speed or how long we fell. Earth grew noticeably larger, and continued to expand below us. Given time and a calculator, I might have been able to estimate our height based on the apparent size of the planet, but that was beyond my ability to do in my head.

My thoughts began to drift. What would the Porters tell my parents? They couldn’t exactly head out west, knock on the door, and say, “We regret to inform you that your son was stabbed by a dryad, then lost his body when he entered a clockwork golem.”

They should make pamphlets. How to cope with the loss of a loved one: A guide to selective magical amnesia. I could have used some instructions back in college, for that matter. How to make your girlfriend believe you’re really not cheating on her, and you’re just a member of a secret magical organization called Die Zwelf Portenære, founded by a guy who supposedly died in 1468.

Die Zwelf Portenære. The Twelve Doorkeepers. Books were a doorway to magic, and the automatons were living books. I had passed through that doorway. Surely there was a way to pass back, to re-create my physical body . . .

Doorkeepers. Guardians.

I thought back to my first encounter with Hubert, in Detroit. Whatever had come after me in that book had felt like a living mind. Not a character, not a spell, but another presence, desperate and starving.

What if Hubert hadn’t sent that thing through the book? What if it had already been there, living in magic itself? Locked away. What had Hubert said? Everything comes down to locking the doors. Creating prisons.

It made sense. That was why Pallas had wanted to keep me under guard. I had reached too deep into magic, and she was afraid of what I might have brought back.

Turbulence jolted me back to the present. At this speed, even the thinnest air at the very edge of Earth’s atmosphere battered me harder than any automaton. I spread my arms and legs, tilting my hands like rudders to spin myself toward the closest automaton. The air below grew hotter as I flew closer.

It reached out to grab me, but this time I welcomed the attack. I wrapped the other automaton in a bear hug, wrenching us both around so it was beneath me. “Ever wonder why meteorites burn up in the atmosphere? Welcome to your first and last lesson in twenty-first-century physics.”