Thirteen year old Billy Matheson has woken up into his worst nightmare: he has been sucked into the Dark World of the serial killer dubbed ‘the Wolfman’. Knowing the Wolfman’s macabre MO of preparing the meat for slaughter, homicide detective Jo Hanson can feel the clock ticking as she joins the hunt for Billy and his kidnapper. The case brings back a flood of unwelcome memories for her, and she is forced to struggle with these memories in order to save Billy. With the Homicide Squad totally baffled by the Wolfman’s apparently random and incomprehensible method of marking and kidnapping his young victims, Jo looks for help in Harry O'Brien: a man she never knew she’d trust again.Together they undertake a hunt that leads them into places they never knew existed, and involves connections that neither can believe.