DCI Hunt is determined to keep a lid on protests against the London Docklands development. When a suspected member of the London Liberation Front is arrested, Alex finds out her mother, a lawyer, will defend him. Meanwhile, Prince Charles is marrying Lady Diana Spencer and the in-crowd is partying at the Blitz Club.

Fresh from a successful drugs bust, Gene and the team investigate a prostitute's rape allegation. A dangerous serial attacker may be at large, but the case is hampered by an unreliable witness and the suspect's connections.

CID investigate a murder, and discover a plot to sell stolen nuclear secrets to the Revolutionary Workers Front. When Gene and Alex get trapped in a secret Government facility at Edgehampton, the temperature rises.

Gene and Alex discover that a notorious pimp and drug dealer has a major firearms deal in the pipeline. In an attempt to locate him, the team go undercover in a gay club, and Ray goes beyond the call of duty to get his man.

An armed robbery leads Gene to Chas Cale, a criminal he tried to bring down in Manchester. But when Chas reveals his alibi, Gene begins to wonder if he is past his prime as a DCI. Alex sends Ray and Chris undercover at the local pub in order to solve the case.

The team investigates the armed robbery of a fundraiser who has been travelling across the country in a bathtub full of baked beans to raise money for Children in Need. Alex thinks that a crime reconstruction on Police Five will do the trick, but Gene prefers some old-fashioned police work.

Alex is determined to prevent the murder of her parents in a car bomb attack. Gene, meanwhile, is determined to give a good impression to a visiting Lord Scarman, but the station is still dealing with the aftermath of a Gay Pride demonstration.