Ida is a self-confessed serial killer of predatory men. She feels no remorse for her victims, but has decided she needs psychiatric help... if only to lay the groundwork for an insanity plea if she gets caught. Clarissa is a celebrity psychotherapist, the best in her field, a familiar face on television and in glossy magazines. For her, every patient is special-someone only she can save. When Ida walks into Clarissa's consulting room one day, the therapist doesn't know that they share a dark secret, buried in both their pasts. As Ida's therapy begins, and Clarissa starts to probe the deepest recesses of her mind, a game of cat and mouse begins. Will Clarissa realise the truth before it's too late? When Ida becomes Clarissa's patient, a cat-and-mouse game begins in which nobody plays by the rules. The kind of game that never ends well...