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Chester Morris as Horatio 'Boston Blackie' Black |
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Trudy Marshall as Irene |
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Constance Dowling as Dinah Moran |
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Richard Lane as Inspector Farraday |
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George E. Stone as The Runt |
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Frank Sully as Sgt. Matthews |
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Warren Ashe as John Lampau, alias John Jani |
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Selmer Jackson as Warden Lund |
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Wanda Perry as Secretary (uncredited) |
| Directing | D. Ross Lederman | Director |
| Editing | James Sweeney | Editor |
| Production | Ted Richmond | Producer |
| Crew | Malcolm Stuart Boylan | Additional Dialogue |
| Writing | Harry Essex | Screenplay |
| Writing | Jack Boyle | Characters |
| Art | William F. Calvert | Set Decoration |
| Art | Charles Clague | Art Direction |
| Sound | Mischa Bakaleinikoff | Music Director |
| Camera | George Meehan | Director of Photography |
