Robert Naysmith is a successful businessman playing a deadly game. He's a serial killer, but his motive isn't money, anger or sex. He doesn't even choose his victims. Each is selected randomly — the first person to make eye contact after he begins the game will be unlucky. When the body of a young woman is found on Severn Beach, Detective Inspector Harland is assigned the apparently motiveless killing. It's only when he links the case to an unsolved murder in Oxford that the police begin to guess at the awful scale of Naysmith's work. But how do they find the perpetrator of motiveless crimes?