Detective Jack Warr is haunted by the gruesome legacy of serial killer Rodney Middleton and reeling from a series of events that has left him deep in depression. Refusing the Met-offered counselling service, Jack instead finds solace instead through renewing a dangerous friendship with the artist and master forger, Adam Border.

When a body is discovered nailed to a giant cross in a framer's shop, Jack feels a connection to the case even though it is not in his jurisdiction.

But is his involvement that of a detective or witness?