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Ken Clark as Capt. John Anderson |
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Muzaffer Tema as Dr. Selim Hamid |
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Michi Kobi as Dr. Hideko Murata |
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Tom Conway as Dr. Feodor Orloff |
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Anthony Dexter as Dr. Luis Vargas |
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Anna-Lisa as Dr. Sigrid Bomark |
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John Wengraf as Dr. Erich Heinrich |
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Robert Montgomery Jr. as Roddy Murdock |
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Phillip Baird as Dr. William Rochester |
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Richard Weber as Dr. David Ruskin |
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Roger Til as Dr. Etienne Martel |
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Cory Devlin as Dr. Asmara Markonen |
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Francis X. Bushman as Secretary General of the International Space Order |
| Directing | David Bradley | Director |
| Production | Fred Gebhardt | Producer |
| Writing | DeWitt Bodeen | Screenplay |
| Writing | Fred Gebhardt | Story |
| Camera | John Alton | Director of Photography |
| Production | Thom E. Fox | Associate Producer |
| Sound | Michael Andersen | Original Music Composer |
| Editing | Edward Mann | Editor |
| Art | Rudi Feld | Art Direction |
| Art | John Burton | Set Decoration |
| Production | Joel Freeman | Production Supervisor |
| Sound | Michael Andersen | Conductor |
| Directing | Gil Mandelik | Assistant Director |
| Sound | Herman Lewis | Sound Mixer |
| Crew | Howard A. Anderson | Special Effects |
