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Noah Beery as Felix Marl |
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Hugh Wakefield as Derek Yale |
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Alfred Drayton as Insp. Parr |
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Niall MacGinnis as Jack Beardmore |
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June Duprez as Sylvia Hammond |
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Paul Blake as Sgt. Webster |
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Basil Gill as James Beardmore |
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Gordon McLeod as Brabazon |
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Renee Gadd as Millie Macroy |
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Ralph Truman as Lawrence Fuller |
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Robert Rendel as Commissioner |
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William Hartnell as |
| Directing | Reginald Denham | Director |
| Writing | Edgar Wallace | Novel |
| Writing | Howard Irving Young | Adaptation |
| Production | Richard Wainwright | Producer |
| Camera | Philip Tannura | Director of Photography |
