Every day, life in the Frost grows increasingly perilous for its inhabitants. The Farther occupation continues, and food is becoming scarce. Lia Weaver’s family is facing increasing perils, too—Jonn pushes his health to the brink as he works to uncover the mysteries of Echlos, and Ivy risks everything to get food for the family. And for the second time, the Weaver family is harboring a fugitive, but Lia doesn’t trust her. Lia has personally braved many struggles—a Farther occupation, family secrets, a heart torn between two men, and Watcher attacks—as she struggles to keep her family safe. But now, she will face her greatest challenge and uncover the Frost’s deepest secrets as she completes her most dangerous mission yet for the Thorns.