
Harry, a Toronto Detective, has a theory about a serial killer. He has no firm evidence and his theory is debunked. He is assigned a new partner Cassie who, to Harry's surprise, believes in his theory. They reinvestigate cold cases and disappearances. Their searches uncover new evidence that convinces their Boss to approve their travel to B.C. to follow a lead. There they uncover proof of the identity of their prime suspect and his earliest victims. The search extends to Montreal and the two detectives fall in love whilst following his trail. In a thrilling finale Harry meets the serial killer face to face in a deadly chess match.