Nearly six months after the events of This Savage Song, the peace between monsters and the humans has failed, and the terrifying reality is war. Kate Harker isn’t afraid of the dark. She hunts monsters. And she’s good at it. And now, in Prosperity, she has become the ruthless hunter she knew she could be. August Flynn is a monster who can never be human, no matter how much he once yearned for it. Instead he has become the leader he never wished to be. Now he has a part to play, and he will play it, no matter the cost. When a new monster emerges from the shadows–one who feeds on chaos and gives form to its victim’s inner demons–it calls Kate home, luring the hunter into the trap. To escape, she’ll face a monster she thought she killed, a boy she thought she knew, and a demon all her own.