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Leo Gorcey as Terence Aloysius 'Slip' Mahoney |
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Huntz Hall as Sach |
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Douglass Dumbrille as Dr. Coslow |
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Bobby Jordan as Bobby |
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Gabriel Dell as Gabe 'Gabie' Moreno |
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William Benedict as Whitey (as Billy Benedict) |
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David Gorcey as Chuck |
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Tanis Chandler as Mignon |
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Maurice Cass as Dr. Bender |
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Vera Lewis as Mrs. Grimm |
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Charles Middleton as Mr. Stiles |
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Chester Clute as Brown |
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Richard Alexander as Ivan |
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Bernard Gorcey as Louis Xavier 'Louie' Dumbrowski |
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Charles Millsfield as Dean Pettyboff |
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Art Miles as Herman the Gorilla (as Arthur Miles) |
| Writing | Tim Ryan | Screenplay |
| Writing | Edmond Seward | Screenplay |
| Directing | William Beaudine | Director |
| Costume & Make-Up | Harry Ross | Makeup Artist |
| Sound | Tom Lambert | Sound Recordist |
| Editing | William Austin | Editor |
| Editing | Richard C. Currier | Supervising Film Editor |
| Camera | Harry Neumann | Director of Photography |
| Sound | Edward J. Kay | Music Director |
| Production | Jan Grippo | Producer |
| Production | Glenn Cook | Production Manager |
