The killer has struck again. With one of their own as the latest victim, the police have to prepare for what should be the final murder. From the CCTV footage, they are able to trace the driver of a van that was in the area and in which they find blood evidence. It is soon evident however that the murderer has in fact stolen someone's identity and the police come to yet another dead end. DI Chandler develops his own theory as to the identity of the original Ripper leading him to a block of flats where he is assaulted.