The action begins in the year 1954, when a woman's body is found in the fen-land of Norfolk, and a murder investigation gets under way. In the end, Detective Inspectors Masters and Moore find themselves dealing with the deaths of five women, all apparently by the hand of the same murderer. A young man becomes their principal suspect - but is he really a serial killer?

Part two of two. Eddie Brannel's protests of innocence urge Masters to go against orders, and as a consequence he learns the true identity of the killer.