They messed with her. But they picked the wrong woman … Simone used to be the woman that other women would use if they suspected that their partner was cheating. She would investigate, find out the truth, and if the men were guilty, exact revenge. But after things went wrong with one couple, Simone was forced to go into hiding to evade the law. Having assumed a new identity, Simone is now Mary, a mild-mannered woman who doesn't raise her voice or get angry, meaning nobody would suspect her of being capable of the things she used to do for a living. But when she finds out that her new boyfriend is having an affair, it awakens in her the person she used to be. That means Simone is back. It also means that her boyfriend and his mistress are in for the shock of their lives … Another gripping psychological thriller from the bestselling author of Til Death Do Us Part and The Passenger .