Monday Night Fever
Arthur is much taken by would-be singer Sharon Dobbs, who is a pretty girl but no great vocalist. He gets her a gig at a club run by dodgy Chris Lambert, who welshes on their agreement, and when Terry refuses to teach Lambert a lesson, Arthur turns to Vic Piner instead. As Piner is a well-known psycho it is down to Terry to get involved after all, to prevent a murder.