Camille--whose wife Irene was murdered by a sadistic serial killer--has at last opened his emotional lockbox for Anne Forestier, the new woman who has unexpectedly entered his life. But brutal history seems to repeat itself as Anne is violently attacked one day in what seems like a random instance of being in the wrong place at the wrong time. As she recovers, Camille begins the investigation while keeping his relationship with Anne secret from his superiors. When it becomes clear that whoever assaulted Anne is determined to finish the job, Camille hides her in his country home. But in spite of his perfect covering of their trail, the mysterious antagonist finds them. Though the attack fails, Camille starts to wonder if there is more to the situation than meets the eye--as there is no way they could have been followed or discovered without some leak of information. Defying his superiors, Camille dives into the new, deeply personal investigation with all the fervor he can muster, uncovering increasingly shocking connections between Anne, the attackers, his trusted colleagues, his Irene's murderer, and himself.