Wire in the Blood - Season 4

When a rapist who was convicted on Tony's evidence is released, Tony appears to be discredited. To make matters worse Carol has left for South Africa without even saying goodbye to him. He offers his help to her successor, Alex, another female officer, when a number of young women are found dead, their bodies buried in fields. (imdb.com, don @ minifie-1)

When a young prostitute is found dead, clinical psychologist Dr. Tony Hill sees an immediate parallel with the crimes committed by a serial killer incarcerated in a high-security psychiatric unit, Derek Tyler. There can be no doubt that Tyler is innocent of the most recent crime but the similarities - the women were all blond, young, bound to the bed and cut until they bled to death - cannot be ignored. (imdb.com, garykmcd)

Tony Hill assists Fielding and the police in their investigation of a bizarre series of murders, leaving two bodies at every crime scene. In each case the victims - a property developer, a bishop, a judge - were brutally killed and the killers then immediately committed suicide. Tony thinks there is a connection to religious zealotry and the Freemasons, but then realizes that they are dealing with a religious sect that glorifies suicide. (imdb.com, garykmcd)

When a young woman is raped and murdered after being kidnapped from a nightclub, Tony Hill is convinced that Jason Eglee is responsible. Ten years previously Tony had got him to confess to the rape of Tracy Bradshaw in what was Tony's first case working for the police. Eglee was released on parole, against Tony's advice, only three weeks before the most recent crime. (imdb.com, garykmcd)