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Donald Meek as Dr. Crabtree - Criminologist |
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John Hamilton as Inspector Carr |
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Betty Pierce as Daisy |
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Harry T. Morey as Ship's Captain |
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Ray Collins as Waite |
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Walter Kingsford as Dodge - Miller's Valet (uncredited) |
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Charles C. Wilson as Detective Doyle (uncredited) |
| Writing | Burnet Hershey | Dialogue |
| Camera | Edwin B. DuPar | Director of Photography |
| Directing | Joseph Henabery | Director |
| Writing | S.S. Van Dine | Writer |
