S16·E41 The Deep Blue Sea

With Leroy Jones being held captive by rival dealer Touissant, Rickman is sent to make a second purchase from the syndicate. Rickman tails her contact to a tower block in the city, where Touissant's crew burst in and shoot the ringleader of "The Syndicate" and Rickman's contact. When Jones is ordered to kill Toussaint's main rival, Nathan Clarke, Rickman finds she has fallen for Jones and confesses her love and status as a police officer. When he abandons her, she goes back to Sun Hill before getting into Touissant's so SO19 can conduct a raid. With Jones a surprise member of the group, Rickman warns him to leave, but she finds herself as a hostage for a vengeful Touissant when SO19 storm in.