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Arthur Franz as Dr. Jim Barker |
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Virginia Huston as Carol Stafford |
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Cameron Mitchell as Steve Abbott |
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John Litel as Dr. Lane |
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Richard Gaines as Prof. Jackson |
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Morris Ankrum as Ikron |
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Marguerite Chapman as Alita |
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Lucille Barkley as Terris |
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Robert Barrat as Tillamar |
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Edward Earle as Justin (uncredited) |
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William Forrest as General (uncredited) |
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David Bond as Ramay (uncredited) |
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Stanley Blystone as Councilman (uncredited) |
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Tristram Coffin as Commentator (uncredited) |
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Everett Glass as Montar (uncredited) |
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Trevor Bardette as Alzar (uncredited) |
| Directing | Lesley Selander | Director |
| Sound | Marlin Skiles | Original Music Composer |
| Camera | Harry Neumann | Director of Photography |
| Writing | Arthur Strawn | Screenplay |
| Editing | Richard V. Heermance | Editor |
| Production | Walter Mirisch | Producer |
