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Peter Graves as Chris Cronyn |
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Andrea King as Linda Cronyn |
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Herbert Berghof as Franz Calder |
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Marvin Miller as Arjenian |
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Orley Lindgren as Stewart Cronyn |
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Walter Sande as Admiral Bill Carey |
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Willis Bouchey as President |
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Morris Ankrum as Secretary of Defense Sparks |
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George Blagoi as Russian Official (uncredited) |
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Bayard Veiller as Roger Cronyn |
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Tom Keene as Maj. Gen. George Burdette |
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Colin Kenny as Mine Owner |
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House Peters Jr. as Dr. Boulting - Mitchell's Assistant |
| Camera | Joseph F. Biroc | Director of Photography |
| Directing | Harry Horner | Director |
| Costume & Make-Up | Don L. Cash | Makeup Supervisor |
| Art | Murray Waite | Set Decoration |
| Sound | Victor B. Appel | Sound Engineer |
| Art | Charles D. Hall | Art Direction |
| Production | Donald Hyde | Producer |
| Writing | Anthony Veiller | Writer |
| Sound | Mahlon Merrick | Original Music Composer |
| Directing | Emmett Emerson | Assistant Director |
| Production | Anthony Veiller | Producer |
| Writing | John L. Balderston | Writer |
| Editing | Francis D. Lyon | Editor |
