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Emlyn Williams as Lord Lebanon |
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Cathleen Nesbitt as Lady Lebanon |
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Norman McKinnel as Chief Inspector Tanner |
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Gordon Harker as Sergeant Totty |
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Cyril Raymond as Sergeant Ferraby |
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Belle Chrystall as Aisla Crane |
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D.A. Clarke-Smith as Dr. Amersham |
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Percy Parsons as Gilder |
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Finlay Currie as Brooks |
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Julian Royce as Kelver |
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Eric Roland as Stud |
| Sound | Harold V. King | Sound |
| Production | Michael Balcon | Producer |
| Art | Norman G. Arnold | Production Design |
| Writing | Bryan Edgar Wallace | Writer |
| Directing | T. Hayes Hunter | Director |
| Writing | Angus MacPhail | Writer |
| Writing | Edgar Wallace | Theatre Play |
