Newly-promoted DI Reid leads the investigation into the fatal stabbing of a busker. DI Ross's personal problems continue to affect his professional life.
A badly-beaten body is discovered by a motorway, and the investigation leads the team to an illegal bare-knuckle fighting ring. DI Ross has to face up to his gambling addiction.
A man and three of his children are found dead in their home, and a fourth child is critically ill. It initially appears that the father killed his children and took his own life, but forensic tests show that the father died first and suggest that the culprit is still at large.moreless
An Iranian refugee is burned to death, and the evidence points to a racially-motivated murder, but DCI Burke suspects otherwise, and the team uncovers a connection to a local drug dealer.
A shipworkers' trade union leader and his employer are both shot during an industrial dispute, the union man fatally. DCI Burke and the team suspect that this was a corporate killing.
The mutilated body of a torture victim is found in an empty warehouse. Detectives from the Met, investigating a similar case in London, arrive to help in the investigation. The team discovers that the dead man was a newly-qualified doctor who made and sold recreational drugs to pay his way through medical school.moreless