Directed by
| Paul Wendkos | ... | (directed by) |
Writing Credits
| Meyer Dolinsky | ... | (written by) (as Michael Adams) |
| Larry Cohen | ... | (created by) |
Cast (in credits order)
| Roy Thinnes | ... | David Vincent | |
| Jack Lord | ... | George Vikor | |
| Alfred Ryder | ... | Mr. Nexus | |
| Diana Hyland | ... | Sherri Vikor | |
 |
Richard O'Brien | ... | Police Sergeant |
| Sam Edwards | ... | Hank | |
| Joe Di Reda | ... | Phil (as Joe di Reda) | |
| Hal Baylor | ... | Guard #1 | |
| Larry Duran | ... | Houseboy | |
|
|
Max Kleven | ... | Guard #2 |
| Rest of cast listed alphabetically: | |||
|
|
Craig Chudy | ... | Alien (uncredited) |
|
|
Dick Wesson | ... | Introductory Narrator (voice) (uncredited) |
|
|
William Woodson | ... | Narrator (voice) (uncredited) |
Produced by
| Alan A. Armer | ... | producer |
| Quinn Martin | ... | executive producer |
| Anthony Spinner | ... | associate producer |
Music by
| Dominic Frontiere | ... | (music by) |
Cinematography by
| Andrew J. McIntyre | ... | director of photography |
Editing by
| Jerry Young | ... | film editor |
Casting By
| Patricia Mock | ... | (as Patricia Rose Mock) (casting) |
Art Direction by
| George B. Chan | ... | (as George Chan) |
Set Decoration by
| Carl Biddiscombe | ||
Makeup Department
| Jack Barron | ... | makeup artist |
| Annabell Levy | ... | hair stylist (as Annabell) |
Production Management
| Howard P. Alston | ... | production manager (as Howard Alston) |
| John Elizalde | ... | post-production supervisor |
| Arthur Fellows | ... | in charge of production |
| Robert Huddleston | ... | unit production manager |
| Adrian Samish | ... | in charge of production |
Second Unit Director or Assistant Director
| Harold Schneider | ... | second assistant director |
| Paul Wurtzel | ... | assistant director |
Art Department
| Arthur Friedrich | ... | property master |
| Harold Nyby | ... | construction coordinator |
Sound Department
| Eddie Campbell | ... | sound editor |
| Al Overton | ... | production mixer |
Special Effects by
| Ira Anderson Jr. | ... | special effects (as Ira Anderson) |
Visual Effects by
| Darrell A. Anderson | ... | special photographic effects |
Stunts
| Glenn R. Wilder | ... | stunt coordinator (uncredited) |
Camera and Electrical Department
| Robert R. Farmer | ... | chief electrician (as Robert Farmer) |
| Larry Milton | ... | key grip |
| Gail Parker | ... | second camera operator |
Costume and Wardrobe Department
| Frank Beetson Jr. | ... | costume supervisor (as Frank Beetson) |
| Joan Joseff | ... | costume jeweller (uncredited) |
Editorial Department
| Carl Barth | ... | editorial coordinator |
| Ray Daniels | ... | assistant film editor |
Music Department
| Dan Carlin Sr. | ... | music editor (as Dan Carlin) |
Script and Continuity Department
| Marshall Schlom | ... | script supervisor |
Additional Crew
| John Conwell | ... | assistant to executive producer |
