Cast 18

1. 

   Barbara Wilson

   Diane Wilson

2. 

   Sten Gester

   Erik Engström

3. 

   Robert Burton

   Dr. Frederick Wilson

4. 

   Bengt Blomgren

   Col. Robert Bottiger

5. 

   Åke Grönberg

   Dr. Henrik

6. 

   John Carradine

   Narrator

7. 

   Gösta Prüzelius

   Dr. Walter Ullman

8. 

   Brita Borg

   Singer (uncredited)

9. 

   Doreen Denning

   Anna (uncredited)

10. 

    Ittla Frodi

    Girlfriend in Volvo (uncredited)

11. Lars Åhrén

    The Monster (uncredited)

12. 

    Steve Conte

    American Radio Supervisor #2 (US TV version) (uncredited)

13. Fred Hoffman

    Doctor (US TV version) (uncredited)

14. 

    Allan Johansson

    (uncredited)

15. G.J. Mitchell

    Diane's Psychiatrist (US TV version) (uncredited)

16. Chuck Niles

    Second Doctor (US TV version) (uncredited)

17. Gustaf Unger

    Air Passenger with Dark Glasses (uncredited)

18. 

    Katherine Victor

    Diane's Mother (US TV version) (uncredited)

Crew 11