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.
| Sound | Lew Stone | Orchestrator |
| Writing | Ben Travers | Screenplay |
| Directing | Arthur Barnes | Assistant Director |
| Sound | L.E. Overton | Sound Recordist |
| Writing | Tom Walls | Screenplay |
| Editing | Maclean Rogers | Editor |
| Directing | Tom Walls | Director |
| Writing | Ben Travers | Theatre Play |
| Production | Herbert Wilcox | Producer |
| Writing | W.P. Lipscomb | Screenplay |
| Art | Lawrence P. Williams | Art Direction |
| Costume & Make-Up | Doris Zinkeisen | Costume Design |
| Directing | James G. Kelly | Assistant Director |
| Camera | Freddie Young | Director of Photography |