Going under cover, P.C. Mahoney passes for a gentleman to get into the notorious Moonstone Club. There he meets Clifford Tope, a ne'er do well who is love with cabaret star Cora Mellish. She in turn has run up steep gambling debts and has paid off the Club's blackmailing owner with a stolen necklace. As things heat up Cora seeks help from the easy-going Tope.
Tom Walls
Ralph Lynn
Winifred Shotter
Mary Brough
Robertson Hare
Claude Hulbert
Boris Ranevsky
C. V. France
Joan Brierley
Al Bowlly
Roy Fox
Hal Gordon
Kay Hammond
Eileen Munro
Reginald Purdell
Lew Stone
Norma Varden