WINNER OF THE MYTHOPOEIC AWARD • Incarceron is a prison so vast that it contains not only cells and corridors, but metal forests, dilapidated cities, and wilderness. It has been sealed for centuries . . . and only one man has ever escaped.

“Fisher creates a world of danger and suspense that will keep readers ensnared.”—BookPage

“A far-future thriller combines riveting adventure and masterful world-building with profound undertones . . . Like the finest chocolate, a rich confection of darkness, subtlety and depth, bittersweet and absolutely satisfying.”—Kirkus Reviews
Finn cannot remember his childhood. He cannot remember his life before Incarceron—a prison that has been sealed for centuries, where inmates live in cells, dilapidated cities, and unbounded wilderness. No one has ever escaped. But then he finds a crystal key and a girl named Claudia.

Claudia’s father is the Warden of Incarceron. And Claudia is about to become a kind of prisoner herself, doomed to an arranged marriage. If she helps Finn in his escape, she will need his help in return.

But they don’t realize that there is more to Incarceron than meets the eye. Escape will take their greatest courage and cost far more than they know . . . because Incarceron is alive.