Deakin is furious when a fourth drug dealer is assaulted in a number of days, a case which Beech was supposed to be investigating. Beech enlists Lennox and the pair are soon lead to a couple of possible suspects, the O'Brien brothers. Meanwhile, Rickman is dealing with a domestic involving the O'Brien's sister, Kelly. Daly informs his friend DI Baines of area drugs about the operation, unaware that Baines is the main man and the O'Brien's boss. Beech then tries to pin corruption charges on DI Baines, keen to get one over on his rival.

PC Roz Clarke is on attachment to CID, and puts up with the usual teasing from the detectives and her uniform colleagues. She cracks the case she is working on with DC Glaze though, when she realises that a series of break-ins are all one surname in the phone book. When Ch. Insp. Conway and DI Cullen attend a rugby match between the Met and the Army, Conway is abducted when a disgruntled soldier decides to take revenge on those responsible for the abuse he received while at a children's home.