A Montana serial killer is targeting the law enforcement—until the hunted becomes the hunter in this thriller by the #1 New York Times bestselling author. Sheriff Dan Grayson lies near death after a shooting, and the police department of Grizzly Falls, Montana, is in shock. Detective Selena Alvarez, torn between a new relationship and her loyalty to Grayson, works with Detective Regan Pescoli to whittle down the list of suspects. The deeper they go, the more personal and dangerous the case becomes. Then a prominent judge's body is found and the killer sends a sinister warning to the press: "Who's Next?" Pescoli isn't waiting to find out. Headstrong and eager for justice, she'll track the scant clues on her own if she has to. But her search leads her straight to a monster who has had her in his sights all along. And when hunter meets prey, both must be willing to kill—and ready to die.