Conclusion of six. The killer's capture grows near, raising tensions among the officers. Lin Harris is struggling with the death of Margaret Walkinshaw and Trevor assaults a burglar, resulting in his suspension. Jack Mowbray: Ross Kemp. Derek Henderson: Kenneth Cranham.
Robert Jackson is basking in his freedom as well as the media attention. Also: the murder squad attends the funeral of Margaret Walkinshaw and they get a break in the search for her killer. Jack Mowbray: Ross Kemp. Derek Henderson: Kenneth Cranham.
Henderson and Mowbray may be charged with negligent manslaughter when a juror from the Robert Jackson trial is murdered. Meanwhile, Jack tries to reconcile with Sally. Jack Mowbray: Ross Kemp. Derek Henderson: Kenneth Cranham. Sally Mowbray: Hazel Ellerby.
A copycat murder takes place within hours of serial killer Robert Jackson's conviction. Also: Jack (Ross Kemp) must face his future following his divorce and Henderson (Kenneth Cranham) looks to profit from a book deal concerning the serial case.
Mowbray takes himself off the case, goes on leave, and tries to patch things up with Sally and the kids. While he's gone, the police make an arrest. DCS Henderson believes he has his man but needs a confession to be sure.
The police pursue a number of leads, but Mowbray strongly suspects Robert Jackson, a delivery driver with a previous record of violence against women. Mowbray's boss disagrees, however, and the detective must decide whether to charge Jackson.
A young woman is found murdered near the city's red-light district. Her husband quickly becomes the chief suspect, but DC Mowbray has his doubts. Meanwhile, the detectives learn about the brutal murder of three prostitutes in nearby south Wales.
Another victim turns up, and morale among the investigating officers hits rock bottom. The stresses of the job force Mowbray to consult a therapist, but not before his actions drive Sally away from him. Adding to the pressure, the killer strikes again.
Tensions deepen between Mowbray and his wife, as the police launch their investigation into the latest killing. The murdered woman, a student, worked part-time at a pizza restaurant, where the detectives establish a link with the first victim in Wales.