The body of a middle-aged man is discovered in Southampton's red light district - horrifically mutilated with his heart removed. Hours later - and barely cold - the heart arrives with his wife and children by courier. A pattern emerges when another male victim is found dead and eviscerated his heart delivered soon afterwards. The media call it Jack the Ripper in reverse; revenge against the men who lead sordid double lives visiting prostitutes. For Grace only one thing is certain: there's a vicious serial killer at large who must be halted at all costs . . .