Cheryl's capability is called into question when she blows an undercover operation and Chappel subsequently refers her to Christina to talk out her problems. Meanwhile, when's videotape of a high-profile MP having sex with two rent boys is stolen, a blackmail scam ensues in order to ensure the safe return of the tape. As the film making continues, Chappel becomes obsessed with saving the two boys from the clutches of what he perceives to be an S&M filmmaker and a paedophile and attempts to use their information to bring down other suspected paedophiles working in the area. Chappel and Christina struggle to keep their relationship professional.
