DI Will Wagstaffe is called to investigate a gruesome murder, but they soon learn that the victim was arrested two and a half years ago on suspicion of sexually assaulting his young step daughters.

The detectives continue to look into a string of attacks on a series of people who were marked as paedophiles but never convicted, although Wagstaffe is frustrated by the eerie wall of silence from the victims' families. To make matters worse, a web of deceit begins to unravel - leading the DI to a disturbing conclusion.