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Basil Rathbone as Philo Vance |
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Leila Hyams as Belle Dillard |
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Roland Young as Sigurd 'Erik' Arnesson |
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Alec B. Francis as Professor Bertrand Dillard |
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George F. Marion as Adolph Drukker |
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Zelda Sears as Mrs. Otto Drukker |
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Bodil Rosing as Grete Menzel |
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Carroll Nye as John E. Sprigg |
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Charles Quatermaine as John Pardee (as Charles Quartermaine) |
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James Donlan as Ernest Heath |
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Sidney Bracey as Pyne (as Sydney Bracey) |
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Clarence Geldart as John F.-X. Markham |
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Delmer Daves as Raymond Sperling |
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Nellie Bly Baker as Beedle |
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Marcia Mae Jones as Hungry Child in Park (uncredited) |
| Directing | Nick Grindé | Director |
| Directing | David Burton | Director |
| Writing | S.S. Van Dine | Novel |
| Writing | Lenore J. Coffee | Writer |
| Costume & Make-Up | Henrietta Frazer | Costume Design |
| Camera | Roy F. Overbaugh | Director of Photography |
| Editing | William LeVanway | Editor |
| Art | Cedric Gibbons | Art Direction |
| Sound | Donald MacKenzie | Sound Director |
