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Дональд Мик as Dr. Crabtree |
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Джон Хэмилтон as Insp. Carr |
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Rita Lan as Louisa Von Link |
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Дагласс Дамбрилл as Giuseppe Benito |
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Herbert Braggiotti as Nicky Petroff |
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Edward Keane as Sergeant |
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Альмира Сешнс as Concert-Goer (uncredited) |
| Directing | Джозеф Энабери | Director |
| Writing | S.S. Van Dine | Characters |
| Writing | Burnet Hershey | Writer |
| Camera | Edwin B. DuPar | Director of Photography |
