S5·E4 Untouchable

The licence of a pole-dancing club is up for renewal, and Robinson is determined to bring down the manageress, who is thought to be running the club as a front for a prostitution racket. Vickers goes undercover to collude with the club's owner, while Parkes and Cole are tasked with being punters for the night.

When Johnstone decides to stay-on after hours, she notices Vickers on CCTV returning to the club and taking a woman with him into the toilets. Robinson then becomes suspicious after he appears to be colluding with the chief suspect — and using the club's services for himself. Meanwhile, after being left off the operation, Morgan begins to feel that she's becoming more and more outcast from the team.