Directed by
| Otto Lang | ||
Writing Credits (in alphabetical order)
| Joe Neilson | ... | (written by) |
Cast (in credits order) complete, awaiting verification
| Lloyd Bridges | ... | Mike Nelson | |
| Leonard Nimoy | ... | Hoya - Saboteur | |
| Rodolfo Hoyos Jr. | ... | Police Captain Vargas (as Rodolfo Hoyos) | |
| Ken Drake | ... | Dr. Jim Phelpman | |
 |
Matt Pelto | ... | Police Officer |
| Allen Jaffe | ... | Police Officer | |
Produced by
| Leon Benson | ... | producer |
| Ivan Tors | ... | executive producer |
Cinematography by
| Monroe P. Askins | ... | director of photography (as Monroe Askins) |
Editing by
| Charles Craft | ||
Casting By
| Henry Rackin | ... | (uncredited) |
Art Direction by
| Robert Kinoshita | ||
Set Decoration by
| Frank Tuttle | ||
Production Management
| Joe Wonder | ... | production manager |
Second Unit Director or Assistant Director
| Donald Verk | ... | assistant director |
Sound Department
| Lawrence Kaufman | ... | sound editor |
| Al Lincoln | ... | sound supervisor |
Stunts
| Dick Dial | ... | stunt double: Lloyd Bridges (uncredited) |
Camera and Electrical Department
| Lamar Boren | ... | underwater photographer |
| Gaylin P. Schultz | ... | key grip (uncredited) |
Costume and Wardrobe Department
| Seth Banks | ... | wardrobe |
Music Department
| Hayes Pagel | ... | music editor |
Additional Crew
| Courtney Brown | ... | supervisor: diving operations |
| Harry Redmond Jr. | ... | supervisor: technical operations |
