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Chester Morris as Horatio 'Boston Blackie' Black |
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Erik Rolf as Dooley Watson |
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Jeanne Bates as Mary Watson |
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Richard Lane as Insp. John Farraday |
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George E. Stone as The Runt |
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Lloyd Corrigan as Arthur Manleder |
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Douglas Fowley as Nails Blanton (Uncredited) |
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Sid Melton as Benny Hines (Uncredited) |
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Ray Teal as Policeman Joe (Uncredited) |
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Maude Eburne as Edna Counihan (Uncredited) |
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Arthur Hunnicutt as Elwood "Tex" Stewart (Uncredited) |
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Cy Kendall as Jumbo Madigan (Uncredited) |
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Larry Olsen as Johnny Watson (Uncredited) |
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Pierre Watkin as State Governor Rutledge (Uncredited) |
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Walter Sande as Detective Sergeant Matthews (Uncredited) |
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Jack Carr as Carpet Man (Uncredited) |
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Richard Alexander as Carpet Man (Uncredited) |
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George Anderson as Warden J.A. Edwards (Uncredited) |
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Jessie Arnold as Woman in Hallway (Uncredited) |
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Trevor Bardette as Manny Vogel (Uncredited) |
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Eddie Bruce as Sandy (Uncredited) |
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Sally Cairns as Richie Adair (Uncredited) |
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Eddy Chandler as Policeman Frank (Uncredited) |
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James Conaty as Parole Board Member (Uncredited) |
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Heinie Conklin as Police Desk Sergeant (Uncredited) |
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Marie De Becker as Miss Bailey (Uncredited) |
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Sayre Dearing as Reporter at Parole Board Hearing (Uncredited) |
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Minta Durfee as Woman in Hallway (Uncredited) |
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Ben Erway as Prison Warden Root (Uncredited) |
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Jerry Frank as George Phillips (Uncredited) |
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Joel Friedkin as Joe Painter (Uncredited) |
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Kit Guard as Wilfred Thompson (Uncredited) |
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John Harmon as Red Taggart (Uncredited) |
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Carl M. Leviness as Parole Board Member (Uncredited) |
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George Magrill as Policeman (Uncredited) |
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Al Murphy as William Jones (Uncredited) |
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Forbes Murray as Chairman of Parole Board (Uncredited) |
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Frank O'Connor as Policeman (Uncredited) |
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Brian O'Hara as Parker Gray (Uncredited) |
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Dick Rush as Policeman Lally (Uncredited) |
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Harry Semels as Jerome Wagner (Uncredited) |
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John Tyrrell as Driver (Uncredited) |
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Bobby Hale as British Newsman (uncredited) |
| Directing | William Castle | Director |
| Writing | Jack Boyle | Characters |
| Writing | Paul Yawitz | Writer |
| Art | Robert Priestley | Set Decoration |
| Editing | Jerome Thoms | Editor |
| Directing | Earl Bellamy | Assistant Director |
| Art | Paul Murphy | Art Direction |
| Production | Wallace MacDonald | Producer |
| Costume & Make-Up | Clay Campbell | Makeup Artist |
| Art | Lionel Banks | Art Direction |
| Camera | Ernest Miller | Director of Photography |
| Crew | Sidney Cutner | Additional Music |
| Crew | Friedrich Hollaender | Additional Music |
| Sound | Morris Stoloff | Music Director |
| Crew | Matty Roubert | Stunts |
| Crew | Werner R. Heymann | Additional Music |
| Crew | George Magrill | Stunts |
| Crew | Gregory Stone | Additional Music |
| Crew | Eddie Parker | Stunts |
| Sound | Earl Snyder | Sound Engineer |
| Crew | Ben Oakland | Additional Music |
| Crew | George Parrish | Additional Music |
| Crew | Chuck Hamilton | Stunts |
