Directed by
| Joseph M. Newman | ... | (as Joseph Newman) |
| Jack Arnold | ... | (uncredited) |
Writing Credits
| Franklin Coen | ... | (screenplay) & |
| Raymond F. Jones | ... | (story "The Alien Machine") and |
| George Callahan | ... | (screenplay) (as Edward G. O'Callaghan) |
Cast (in credits order) verified as complete
| Jeff Morrow | ... | Exeter | |
| Faith Domergue | ... | Dr. Ruth Adams | |
| Rex Reason | ... | Dr. Cal Meacham | |
| Lance Fuller | ... | Brack | |
| Russell Johnson | ... | Dr. Steve Carlson | |
| Douglas Spencer | ... | The Monitor | |
| Robert Nichols | ... | Joe Wilson | |
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Karl Ludwig Lindt | ... | Dr. Adolph Engelborg (as Karl L. Lindt) |
| Rest of cast listed alphabetically: | |||
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Charlotte Alpert | ... | Metaluna Woman at Decompression Console (uncredited) |
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Jack Byron | ... | Photographer (uncredited) |
| Spencer Chan | ... | Dr. Hu Ling Tang (uncredited) | |
| Richard Deacon | ... | Pilot (uncredited) | |
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Coleman Francis | ... | Express Deliveryman (uncredited) |
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Marc Hamilton | ... | Metaluna Inhabitant (uncredited) |
| Edward Hearn | ... | Reporter (uncredited) | |
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Edward Ingram | ... | Photographer (uncredited) |
| Orangey | ... | Neutron--Cat (uncredited) | |
| Regis Parton | ... | Mutant (uncredited) | |
| Manuel París | ... | Dinner Guest (uncredited) | |
| Olan Soule | ... | First Reporter (uncredited) | |
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Les Spears | ... | Reporter (uncredited) |
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Lizalotta Valesca | ... | Dr. Marie Pitchner (uncredited) |
| Robert B. Williams | ... | Webb (uncredited) | |
Produced by
| William Alland | ... | producer |
Music by
| Henry Mancini | ... | (uncredited) |
| Hans J. Salter | ... | (uncredited) |
| Herman Stein | ... | (uncredited) |
Cinematography by
| Clifford Stine | ... | director of photography |
Editing by
| Virgil W. Vogel | ... | film editor (as Virgil Vogel) |
Art Direction by
| Alexander Golitzen | ... | (art direction) |
| Richard H. Riedel | ... | (art direction) |
Set Decoration by
| Russell A. Gausman | ... | (set decorations) |
| Julia Heron | ... | (set decorations) |
Costume Design by
| Rosemary Odell | ... | (gowns) |
Makeup Department
| Joan St. Oegger | ... | hair stylist |
| Bud Westmore | ... | make-up |
Production Management
| Sergei Petschnikoff | ... | unit production manager (uncredited) |
Second Unit Director or Assistant Director
| Fred Frank | ... | assistant director |
| George Lollier | ... | assistant director (uncredited) |
Sound Department
| Leslie I. Carey | ... | sound |
| Robert Pritchard | ... | sound |
Special Effects by
| David S. Horsley | ... | special photography |
| Clifford Stine | ... | special photography |
| Cleo E. Baker | ... | special effects (uncredited) |
Visual Effects by
| Roswell A. Hoffmann | ... | optical printing (as Roswell A. Hoffman) |
| Frank Tipper | ... | effects animator (uncredited) |
Stunts
| Larry Powell | ... | stunt pilot (uncredited) |
Camera and Electrical Department
| Lew Swartz | ... | technician: Technicolor (uncredited) |
Editorial Department
| William Fritzsche | ... | color consultant: Technicolor |
Music Department
| Joseph Gershenson | ... | music supervision |
| Ethmer Roten | ... | musician: flute (uncredited) |
Script and Continuity Department
| Dorothy Hughes | ... | script supervisor (uncredited) |
Additional Crew
| Dianna Cyrus Bixby | ... | aircraft pilot (uncredited) |
| Reynold Brown | ... | movie poster art (uncredited) |
| Robert Hickman | ... | mutant constructor (uncredited) |
| Frank Inn | ... | cat trainer (uncredited) |
| Jack Kevan | ... | mutant constructor (uncredited) |
| Chris Mueller | ... | mutant constructor (uncredited) |
| Milicent Patrick | ... | mutant designer (uncredited) |
