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Boris Karloff as James Lee Wong |
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Grant Withers as Police Capt. Sam Street |
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Dorothy Tree as Valerie Edwards |
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Craig Reynolds as Peter Harrison |
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Ivan Lebedeff as Michael Strogonoff |
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Holmes Herbert as Prof. Ed Janney |
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Morgan Wallace as Brandon Edwards |
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Lotus Long as Drina |
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Chester Gan as Sing |
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Hooper Atchley as Carslake |
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Bruce Wong as Asian Man |
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Jack Kennedy as Police Guard |
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Lee Tung Foo as Willie |
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Wilbur Mack as Ballstics Expert |
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Dick Morehead as Police Detective |
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Joe Devlin as Police Lt. George Devlin |
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I. Stanford Jolley as Charades-Player |
| Writing | Hugh Wiley | Writer |
| Production | Scott R. Dunlap | Executive Producer |
| Directing | William Nigh | Director |
| Writing | Scott Darling | Screenplay |
| Production | William T. Lackey | Producer |
| Camera | Harry Neumann | Director of Photography |
| Editing | Russell F. Schoengarth | Editor |
| Production | Charles J. Bigelow | Production Manager |
| Sound | Edward J. Kay | Music |
| Art | E.R. Hickson | Art Direction |
| Directing | W.B. Eason | Assistant Director |
