Jack, after taking maternity leave for the birth of his son, is forced to take even more time due to emotional fatigue and depression. Jack's wife Maggie is more than aware of Jack's issues, attempting to persuade him to accept private medical help as he has refused any form of counselling given to officers in the Met. Jack is suffering a nightmare consuming rage. After having to deal with the lengthy horrific murder trial detailing the tragic victims of the serial killer Rodney Middleton, he is haunted by the unidentified remains of more of the killers victims.

Jack finds solace in renewing a dangerous relationship with the artist Adam Bolder. They meet in Portobello market, in a shop selling frames. The enigmatic Adam, has taken up working on fake art in an old disused school out building. The fascination of watching Adam work, the brilliance of his artistic work and the obvious criminal activity in producing these paintings enthrals Jack.

Maggie becomes equally interested in the world of fake art. Jack collecting books and watching art programs, his renewed friendship encourages him to return to work. As he settles back into the old regime at the station, a new female DCI is a force to be reckoned with. One weekend visiting Portobella market again, going to purchase some photo frames for pictures of his new son, the street is cordoned off by police crime scene officers. Ambulances and patrol cars blocking all traffic. A body has been found in the framer's shop. The naked murder victim has had his features destroyed, and horrifically nailed to a giant cross.

The murder is not in Jack's jurisdiction, so another team have been allocated in to lead the enquiry and attempt to identify the victim. But Jack is too involved to steer clear - is he detective or witness?