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Pat O'Brien as Michael O'Flaherty 'Speed' McBride |
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Adolphe Menjou as Kismet |
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Ellen Drew as Connie McBride |
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Rudy Vallee as Gordon Tolliver |
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Fortunio Bonanova as Prof. Zorado |
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Joseph Crehan as Dr. James P. Whitney |
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Jonathan Hale as Osborne |
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Minna Gombell as Aunt Sophie |
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Jason Robards Sr. as Henry Fletcher |
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Jack Norton as William T. Lafferty |
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Robert Homans as Uncle Barney McBride (uncredited) |
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Tom Kennedy as Bartender (uncredited) |
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Carl Switzer as Ignatius Lafferty (uncredited) |
| Costume & Make-Up | Edward Stevenson | Costume Design |
| Art | Victor A. Gangelin | Set Decoration |
| Art | Darrell Silvera | Set Decoration |
| Sound | Francis M. Sarver | Sound |
| Crew | Vernon L. Walker | Special Effects |
| Directing | James E. Casey | Assistant Director |
| Art | Alfred Herman | Art Direction |
| Sound | C. Bakaleinikoff | Music Director |
| Art | Albert S. D'Agostino | Art Direction |
| Sound | Gil Grau | Orchestrator |
| Production | Robert Fellows | Executive Producer |
| Production | Theron Warth | Associate Producer |
| Sound | James G. Stewart | Sound Re-Recording Mixer |
| Directing | Ray Enright | Director |
| Writing | Jerome Cady | Story |
| Sound | Leigh Harline | Original Music Composer |
| Writing | Edwin Blum | Writer |
| Writing | John Tucker Battle | Story |
| Camera | Frank Redman | Director of Photography |
| Editing | Marvin Coil | Editor |
