Cast
- Stephen Boyd as Leyton van Dyk
- France Nuyen as Atanga
- Ray Milland as Professor Peter Handley
- Cameron Mitchell as Bruno Carstens
- Brendon Boone as Jim Handley
- Michael Kirner as Mark Handley
- John van Dreelen as Lee
- John Stacy as Gen. Bill Stryker
- George Wang as Wong
- Marié du Toit as Lucie Handley
Crew
- Robert Day · Director
- Ralph Anders · Writer
- Robert Day · Writer
- Stanley Norman · Writer
- Rick Trader Witcombe · Writer
- Stanley Norman · Producer
- Francesco De Masi · Composer
- Mario Fioretti · Cinematographer
- Frederick Wilson · Editor