Ray and Marie Benson killed 13 women before they were caught, tried and imprisoned. Five of their victims were never found. Six years later, psychologist Alice Quentin discovers a woman's body on the waste ground at Crossbones Yard. The wounds are horrifyingly similar to the Bensons' signature style. But who would want to copy their crimes? When Alice is called in to consult, her first instinct is to say no. She wants to focus on treating her patients, not analysing the mind of a murderer. But the body at Crossbones Yard is just the start, and the killer may already be closer than Alice knows.