When a young couple are found murdered by a remote holiday cabin, Agent Tori Hunter races to the scene: and is devastated to recognize Ally Mannion, a close friend's daughter, and her boyfriend Reed. Who would want to snatch away their innocent lives? The first thing Tori notices is a boat drifting out on the lake. Did someone witness the attack? But with the boat offering up no clues, interviewing Ally's heartbroken family Tori soon realizes that Ally and Reed broke in to the cabin. Were they hiding something? Or did the young couple see something they shouldn't? Then the body of a missing person from fourteen years ago is found at the bottom of another lake. He too was murdered. Convinced the two cases are linked, Tori uncovers a series of terrible crimes at the heart of the local community stretching back years: even to her own school days. To catch the killer Tori will need to question everything about people she's known her whole life. But how far will she have to go, before they strike again?