Boulton and Holmes are left to pick up the pieces when the key witnesses in a robbery case refuse to give evidence. Holmes notices Boulton's change of attitude and suspects he may have found himself a woman. As word gets around the relief, Stanton attempts to cool things off with Boulton, which leaves him devastated. Meanwhile, Stanton's suspicions about Beech increase after she discovers his involvement with a credit card thief, Billy Bullock. Bullock pays Beech £1000 to destroy a CCTV tape of him stealing credit cards from a hotel conference. When Smithy and Hagen pursue Bullock, Beech's cover is nearly blown. When Bullock goes to make the drop, Stanton follows with the hope of catching Beech.

Webb investigates the brutal beating of businessman Kevin Hewlitt, who is found unconscious in his kitchen by his wife, Sandra. The investigation provides little information as to the motive for the attack, and very little description of the assailant is given by those who saw him. CCTV footage shows Sandra having intercourse with another man in her car a week before Kevin's attack, and she later admits to Webb that she and her husband were no longer in love. Lennox tries to break the alibi of Hewlitt's business partner Paul Wilcox, convinced that he is somehow involved in the attack. Webb makes the decision to mix business with pleasure as he begins to fall for Sandra.

When an apparent drug-related murder leads Operation Trident onto Sun Hill's patch, they suspect Yardie street gangs could be active in the area. A new scheme by Conway to encourage taxi drivers to help the police bears fruit when an overzealous cabbie brings a 'prisoner', Wesley Carter, to the station, saying he heard him making a drug deal. When Carter is linked to gangster Leroy Jones, Trident get Rickman to go undercover. As they reunite, Jones admits there are Yardies operating on the patch and he is trying to take on their drug running operation - but that a rival firm is trying to stop him - leaving Rickman caught in the crossfire of a drive-by shooting.