Barbara Wilson
饰 Diane Wilson
Sten Gester
饰 Erik Engström
Robert Burton
饰 Dr. Frederick Wilson
Bengt Blomgren
饰 Col. Robert Bottiger
Åke Grönberg
饰 Dr. Henrik
John Carradine
饰 Narrator (US Re-Edit)
Gösta Prüzelius
饰 Dr. Walter Ullman
Brita Borg
饰 Singer (uncredited)
Doreen Denning
饰 Anna (uncredited)
Ittla Frodi
饰 Girlfriend in Volvo (uncredited)
Lars Åhrén
饰 The Monster (uncredited)
Steve Conte
饰 American Radio Supervisor #2 (US TV version) (uncredited)
Fred Hoffman
饰 Doctor (US TV version) (uncredited)
Allan Johansson
饰 (uncredited)
G.J. Mitchell
饰 Diane's Psychiatrist (US TV version) (uncredited)
Chuck Niles
饰 Second Doctor (US TV version) (uncredited)
Gustaf Unger
饰 Air Passenger with Dark Glasses (uncredited)
Katherine Victor
饰 Diane's Mother (US TV version) (uncredited)
