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Boris Karloff as James Lee Wong |
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Marjorie Reynolds as Roberta 'Bobbie' Logan |
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Grant Withers as Capt. Bill Street |
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Charles Trowbridge as John T. Forbes |
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Frank Puglia as Harry 'Hardway' Lockett |
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Craig Reynolds as Frank Belden, Jr. |
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Lita Chevret as Tanya Serova |
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Harry Strang as Det. Ballard |
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Hooper Atchley as Frank Belden, Sr. |
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Jason Robards Sr. as Griswold |
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Richard Loo as Jeweler |
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Jack Kennedy as Mike |
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C.E. Anderson as Cap Anderson |
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Allan Cavan as Radio Station Owner |
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Tristram Coffin as Hotel Desk Clerk |
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Nick Copeland as The Crank Informant |
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Pauline Drake as Bessie, Switchboard Operator |
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Harry Harvey as Radio Salesman |
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Elsa Janssen as Hotel Maid |
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I. Stanford Jolley as Soapy |
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Donald Kerr as The Drunk |
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Wilbur Mack as Police Medical Examiner |
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Bert Moorhouse as Card Player |
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James C. Morton as Policeman Clancy |
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Paul Scardon as Homer Lyons - Informant |
| Directing | William Nigh | Director |
| Writing | Scott Darling | Screenplay |
| Writing | George Waggner | Adaptation |
| Writing | Hugh Wiley | Characters |
| Production | Scott R. Dunlap | Producer |
| Camera | Harry Neumann | Director of Photography |
| Editing | Russell F. Schoengarth | Editor |
| Costume & Make-Up | Gordon Bau | Makeup Artist |
| Sound | Karl Zint | Sound Recordist |
| Costume & Make-Up | Louis Brown | Costume Design |
| Sound | Edward J. Kay | Music |
| Directing | W.B. Eason | Assistant Director |
