DS Pete Lancaster from Trident arrives to take over the case involving the shooting of drug dealer Andy Marshall. Lance's suspicions that rival Adi Mateen is responsible for the shooting finds him entering a murky world of rival dealing. Laura manages to identify a young girl spotted running away from the scene, and the prime suspect is soon identified as dealer Carlton Gayle. Meanwhile, Sam and Terry are on the trail of Alan Kennedy when he claims to have kidnapped one of his former victims. However, Sam soon realises that Kennedy has set a trap for her. Ramani deals with a woman who has been savagely beaten by her husband, but is upset when the woman's witness statement disappears.
