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Richard Eyer as Timmie Merrinoe |
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Philip Abbott as Dr. Tom Merrinoe |
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Diane Brewster as Mary Merrinoe |
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Harold J. Stone as Gen. Swayne |
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Robert H. Harris as Prof. Frank Allerton |
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Dennis McCarthy as Col. Macklin |
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Alexander Lockwood as Arthur Kelvaney |
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John O'Malley as Prof. Baine |
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Gage Clarke as Dr. Bannerman |
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Than Wyenn as Prof. Zeller |
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Jefferson Dudley Searles as Prof. Foster |
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Alfred Linder as Martin / Computer |
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Ralph Votrian as 1st Gate Sergeant |
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Michael Miller as 2nd Gate Sergeant |
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Rayford Barnes as Capt. McLaren (uncredited) |
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Helen Kleeb as Miss Vandergrift (uncredited) |
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Элви Мур as Scientist (uncredited) |
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Gary Vinson as Young soldier (uncredited) |
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Marvin Miller as Robby the Robot (voice) (uncredited) |
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Robby the Robot as Robby |
| Art | Darrell Silvera | Set Decoration |
| Directing | Herman Hoffman | Director |
| Writing | Cyril Hume | Screenplay |
| Art | Merrill Pye | Art Direction |
| Sound | Les Baxter | Original Music Composer |
| Writing | Edmund Cooper | Story |
| Editing | John Faure | Editor |
| Crew | Jack Rabin | Special Effects |
| Production | Nicholas Nayfack | Producer |
| Crew | Louis DeWitt | Special Effects |
| Crew | Irving Block | Special Effects |
| Camera | Harold E. Wellman | Director of Photography |
| Production | Gus Schroeder | Production Manager |
