Luke Hanson has recently been released from jail after serving 8 years for setting a fire at his local school in which the caretaker had been severely injured. He was across the country committing another crime at the time and would like the team to reopen the case. This was Jack's last case before retiring to care for his wife, who was the victim of a hit and run driver. Supt. Pullman gets an offer of promotion that she is finding very hard to resist, but it would mean leaving the squad. A woman who claims to be his daughter approaches Gerry, and Brian rekindles an interest in war gaming. In the course of investigating the school fire, Jack learns the identity of the hit-and-run driver and decides to take action.

The team reopen a 20-year-old case when a camera and film belonging to a photographic lab assistant murdered in 1987 are found in a Soho pub toilet. New evidence leads the detectives into the dark underside of the modelling world and to the door of a professional footballer. Meanwhile, Brian's erratic behaviour takes an alarming turn and Gerry is less than happy when his daughter Emily joins the team and looks to Sandra as a role model.

The trial of Ricky Hanson starts, and the members of UCOS are scheduled to appear as witnesses. Hanson is the man who killed Jack Halford's wife, but he's on trial for attempting to murder Jack, who was recovering from a car accident over a year ago. Hanson's barrister is clearly out to discredit each of them individually. While at the courthouse, they are asked by an acquaintance of Jack's, Sam Tallis, to look into the death of Ralph Wheeler, who was killed and left his fortune to a tart named Carrie Soper. As they look into the case, they find several possible suspects, including a solicitor, a doctor, and someone with a lengthy criminal record. In the end, the case revolves around a car accident and organ donation.

A new witness comes forward in the murder of 18 year-old Justin King. Justin had been missing for several months before his body was found but the pathologist determined he had been dead for no more than a week. He had also been tortured. Heidi, now 18 herself, tells the police that Justin had been living on a commune and that she saw him a week or so before he died. From all accounts, Justin simply left the commune one day and was never seen again. Sandra isn't buying it however and believes one of the commune's residents was involved in his death. Brian meanwhile is struggling with his alcoholism and may be looking for help.

Ex-actress Gloria Gransford draws the team's attention to a clip, posted on the Internet, from a film she made in 1990 called 'Shadow Show', after which the producer Max Stone was stabbed to death and leading lady Eva Roderick disappeared. Director Don Maddox, Gloria's ex-husband, is egotistical and evasive, and the only other surviving crew member from the film - who posted the clip - is found dead. His young boyfriend goes on the run and located Eva, who now has a new identity. A siege situation develops, which Brian defuses.

The team meets a girl called Jo, who is heckling Right Wing comedian Ray Harris. Her aunt Sarah Jones and Sarah's partner Daniel disappeared twenty-five years earlier whilst engaged in a campaign against Ray's sexist and racist routines. The pair actually infiltrated an extreme group of Nazi supporters called the Twenty-Fours, which numbered Ray, policeman Frank Paterson and Ricky Hanson who killed Jack's wife. Frank was also undercover,trying, unsuccessfully, to bust Hanson's drug racket but now joins with Sandra to nail Hanson once and for all, with unexpected help from Hanson's son Luke, who has made a shocking discovery about his father. Ricky Hanson is charged with murdering the couple - and, at long last, there is closure for Jack too.

Eight years previously clothes designer Ritchie Levene was murdered, stabbed in the neck with a pair of his scissors. For years his ex-wife Sarah has wanted the case reopened and sees her chance when Gerry comes to her for a change in his sartorial image.She suspects Ritchie's younger brother Adrian who assumed control of the fashion company and took it to new heights. Sandra discovers that married Adrian is having an affair with Ritchie's second wife Alison, though they claim it only began some time after Ritchie's death. Then there is Melanie, the nervous P.A. who found Ritchie's body, and Colin Beck, a financier who encouraged Ritchie to invest money in his scheme and also had a motive...