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Boris Karloff as Phillip Knight |
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Beverly Tyler as Sarah Adams |
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Murvyn Vye as Barney Finch |
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Elisha Cook Jr. as Martin Schuyler |
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Rhodes Reason as Matthew Gunn |
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Jean Engstrom as Claire Winter |
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Friedrich von Ledebur as Native Chief |
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Glenn Dixon as Mitchell |
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Owen Cunningham as Howard Carlton |
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Herbert Patterson as Dr. Wilding |
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Jerry Frank as Vickers |
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Adam West as Weather Station #4 Radio Operator |
| Art | Jack T. Collis | Production Design |
| Camera | William Margulies | Director of Photography |
| Production | Aubrey Schenck | Executive Producer |
| Directing | Reginald Le Borg | Director |
| Writing | Richard H. Landau | Writer |
| Production | Howard W. Koch | Producer |
| Sound | Les Baxter | Original Music Composer |
| Editing | John F. Schreyer | Editor |
| Crew | Louis DeWitt | Special Effects |
| Sound | Charles Cooper | Sound Re-Recording Mixer |
| Sound | Charles S. Schilling | Sound Editor |
| Sound | Carlo Lodato | Music Editor |
| Directing | Paul Wurtzel | Assistant Director |
| Sound | Les Baxter | Music Director |
| Sound | Joe Edmondson | Sound Recordist |
| Costume & Make-Up | Mary Westmoreland | Hairstylist |
| Costume & Make-Up | Ted Coodley | Makeup Artist |
| Crew | Jack Rabin | Special Effects |
