Medvirkende og filmhold
-
Edward JuddArnold Bedford - Martha HyerKatherine "Kate" Callender
- Lionel JeffriesJoseph Cavor
- Betty McDowallMargaret Hoy
- Miles MallesonRegistrar
- Gladys HensonNursing Home Matron
- Hugh McDermottRichard Challis
- Erik ChittyGibbs (uncredited)
- Gordon RobinsonSgt. Andrew Martin (uncredited)
- Laurence HerderGlushkov (uncredited)
- Marne MaitlandDr. Tok (uncredited)
- Ray HarryhausenInstruktør
- Nathan H. JuranInstruktør
- Charles H. SchneerProducer
- Ray HarryhausenProducer
- Nigel KnealeManuskriptforfatter
- H.G. WellsManuskriptforfatter