The disappearance of a five-year-old girl from a council estate sends the police on a wild hunt. When her body is discovered, police begin searching for her murderer.

The case against Dunn becomes uncertain when it is revealed a crucial piece of evidence is tainted. The team is forced on a wild hunt to find a blue sherry bottle that could restrengthen the case.

Michael Walker and Pat North investigate when the victim of a string of attacks names her assailant. Three of the suspect's employees come forward to admit to the crime, complicating the investigation.

Marilyn Stark identifies her attacker as Damon Morton when a third victim is found, and the police believe they have sufficient evidence to charge him.

An eight-year-old cold case causes tensions between North and Walker, and James gets involved. Prejudices run wild and tampered evidence could frame an innocent man.

Gary Meadow's daughter claims that she was there when he killed himself. DS was in charge of the inquiry, and she begins to suspect that he was somehow involved in a cover-up.