Directed by
| Richard Carlson | ... | (directed by) |
| Herbert L. Strock | ... | (uncredited) |
Writing Credits
| Curt Siodmak | ... | (screenplay by) |
| Ivan Tors | ... | (story) (uncredited) |
Cast (in credits order) verified as complete
| William Lundigan | ... | Dr. Richard Stanton | |
| Herbert Marshall | ... | Dr. Don Stanton | |
| Richard Carlson | ... | Dr. Jerry Lockwood | |
| Martha Hyer | ... | Dr. Jane Flynn | |
| Dawn Addams | ... | Susan Manners | |
| Robert Karnes | ... | Walter Gordon | |
| Lawrence Dobkin | ... | Dr. Delmar | |
| George Eldredge | ... | Dr. Paul Dryden | |
| Dan Riss | ... | Dr. Frank Werner | |
| Michael Fox | ... | Dr. Klinger | |
| King Donovan | ... | James O'Herli | |
 |
Kem Dibbs | ... | David Wells |
| James Best | ... | Dr. Sidney K. Fuller (as James K. Best) | |
| Rest of cast listed alphabetically: | |||
| Dick Cogan | ... | Research Laboratory Manager (uncredited) | |
|
|
Jack George | ... | Susan's Photographer (uncredited) |
|
|
John Hedloe | ... | Archibald Guiness (uncredited) |
Produced by
| Maxwell Smith | ... | associate producer in charge of scientific research |
| Herbert L. Strock | ... | associate producer |
| Ivan Tors | ... | producer (produced by) |
Music by
| Harry Sukman | ... | (music composed by) |
Cinematography by
| Stanley Cortez | ... | director of photography |
| Joseph F. Biroc | ... | (uncredited) |
Casting By
| Michael Fox | ... | (uncredited) |
Art Direction by
| Jerome Pycha Jr. | ||
Set Decoration by
| Victor A. Gangelin | ... | (as Victor Gangelin) |
Makeup Department
| Louis Phillipi | ... | makeup artist |
Second Unit Director or Assistant Director
| Marty Moss | ... | assistant director |
Sound Department
| Cathey Burrow | ... | sound effects editor |
| Jack A. Goodrich | ... | sound (as Jack Goodrich) |
| Joel Moss | ... | sound |
Special Effects by
| Jack R. Glass | ... | special photographic effects |
| Harry Redmond Jr. | ... | special effects director |
Editorial Department
| Clifford D. Shank | ... | color consultant |
| Herbert L. Strock | ... | editorial supervisor |
Music Department
| Harry Sukman | ... | conductor: music |
| Henry Vars | ... | orchestrator (uncredited) |
Script and Continuity Department
| Jack Herzberg | ... | script supervisor |
Additional Crew
| Konrad Buettner | ... | researcher: space-medicine (as Dr. Konrad Buettner) |
| Richard Taylor | ... | assistant to producer (as Dick Taylor) |
| Michael Fox | ... | assistant to Ivan Tors (uncredited) |
