Directed by
| Herbert L. Strock | ||
Writing Credits
| Tom Taggart | ... | (screenplay) |
| Richard G. Taylor | ... | (additional dialogue) |
| Ivan Tors | ... | (story) |
Cast (in credits order) verified as complete
| Richard Egan | ... | Dr. David Sheppard | |
| Constance Dowling | ... | Joanna Merritt | |
| Herbert Marshall | ... | Dr. Van Ness | |
| John Wengraf | ... | Dr. Zeitman | |
| Philip Van Zandt | ... | Dr. Pierre Elzevir | |
| Valerie Vernon | ... | Mme. Elzevir | |
| Stephen Roberts | ... | Maj. Howard (as Steve Roberts) | |
| Byron Kane | ... | Dr. Carter | |
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David Alpert | ... | Dr. Peter Burden |
| Michael Fox | ... | Dr. Hubertus | |
| William Schallert | ... | Engle | |
| Marian Richman | ... | Helen | |
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Jean Dean | ... | Marna Roberts (as Jeanne Dean) |
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Tom Daly | ... | Senator |
| Rest of cast listed alphabetically: | |||
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Andy Andrews | ... | Andy, a security guard (uncredited) |
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Al Bayer | ... | Helicopter Pilot (uncredited) |
| Billy Curtis | ... | Gog / Magog operator (uncredited) | |
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Alex Jackson | ... | Vince (uncredited) |
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Beverly Jocher | ... | Acrobat (uncredited) |
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Julian Ludwig | ... | Julie, a security guard (uncredited) |
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Patty Taylor | ... | Acrobat (uncredited) |
| Aline Towne | ... | Dr. Kirby (uncredited) | |
Produced by
| Ivan Tors | ... | producer |
Music by
| Harry Sukman | ... | (as Harry Sükman) |
Cinematography by
| Lothrop B. Worth | ... | director of photography |
Editing by
| Herbert L. Strock | ||
Art Direction by
| William Ferrari | ||
Set Decoration by
| Victor A. Gangelin | ... | (as Victor G. Gangelin) |
Costume Design by
| Valerie Vernon | ||
Makeup Department
| Eleanor Edwards | ... | hair stylist (as Elenore Edwards) |
| Ted Larsen | ... | makeup artist |
Second Unit Director or Assistant Director
| Richard Evans | ... | assistant director |
| Marty Moss | ... | assistant director |
Sound Department
| Cathey Burrow | ... | sound effects editor |
| Jack A. Goodrich | ... | sound |
| Joel Moss | ... | sound |
Special Effects by
| Harry Redmond Jr. | ... | special effects director |
Editorial Department
| Clifford D. Shank | ... | color consultant |
Music Department
| Harry Sukman | ... | conductor (as Harry Sükman) |
| Henry Vars | ... | orchestrator |
Script and Continuity Department
| Jack Herzberg | ... | script supervisor |
Additional Crew
| Michael Fox | ... | dialogue director |
| Maxwell Smith | ... | in charge of scientific research |
| Richard Taylor | ... | assistant to producer |
