An adult fantasy novel from the author of Divergent and Chosen Ones. Sonya Kantor has been confined to a single city block since she was a teenager. When she's given the chance to escape, she must decide if the cost is one she's willing to pay . . .

Before the revolution, a totalitarian regime known as the Delegation ruled the Pacific Northwest, using mass surveillance to enforce its will on its citizens. But then the people fought back. The Delegation fell. Those favored by it-and their children-were confined to a city block and forgotten. Good riddance, most people said.

Sonya Kantor, who lost all her family in the revolution, has been living there-in the Aperture-since she was a teenager. But the new government has just given her a chance to earn her freedom: she has to right one of the wrongs of the Delegation. She has to find a missing girl, someone the Delegation displaced from her family. That girl could be anywhere. And the cost of finding her might be higher than Sonya is willing to pay.