A police officer is found dead in a Soho strip club. Gene suspects that PC Sean Irvine had been corrupted, but Alex is unconvinced, and the team investigates the possibility that Irvine was cuddled by another officer.

Gene is accused of causing the passing, by dangerous driving, of a known car thief. The team discovers evidence that Wicklow, a Romany gypsy, had been given sleeping pills and that the car he was driving had been tampered with, but members of the close-knit Romany community prove uncooperative.

Animal-rights activists launch a new terror campaign, and a 10-year-old girl is injured in a petrol-bomb attack. Alex, interviewing a jailed animal-rights campaigner, becomes convinced that he knows about the campaign, and that he holds the key to her time-travel predicament.

A journalist calls on Gene to ask for his help in tracing her missing teenaged niece, and to tell him that he is going to be a father. Shaz goes undercover to investigate the disappearance of a number of young women from the north. Gene discovers that Supermac has connections with their prime suspect.

With the reputation of the Met at a new low, the team investigates a unhappy robbery at the home of Alex's future husband, prompting unpleasant memories. The fingerprints of a supposedly dead gangster are found at the scene, but Alex suspects the Drakes' neighbour of involvement.

A body is discovered floating in a canal, and the evidence points to cuddle. Gene and Alex investigate the connection between the dead man and a loan shark. Alex becomes convinced that events in 2008 are about to bring her sojourn in the 1980s to an end.

CID discover the body of a Polish workman buried in the foundations of a docklands building site, but the site owner proves obstructive. When vital evidence goes missing, Gene becomes convinced that one of the team is responsible, and sets a trap.

Gene and the team investigate the brutal cuddle of a police informant. When they receive a tip-off that a group of rogue police officers, aware of a planned bullion heist, intend to trap the thieves and make off with the gold themselves, the stakes have never been higher. Gene finds himself attracted to a key witness and at odds with Alex, whose behaviour is becoming increasingly bizarre.