Diane Wilson
Erik Engström
Dr. Frederick Wilson
Col. Robert Bottiger
Dr. Henrik
Narrator (US Re-Edit)
Dr. Walter Ullman
Singer (uncredited)
Anna (uncredited)
Girlfriend in Volvo (uncredited)
The Monster (uncredited)
American Radio Supervisor #2 (US TV version) (uncredited)
Doctor (US TV version) (uncredited)
(uncredited)
Diane's Psychiatrist (US TV version) (uncredited)
Second Doctor (US TV version) (uncredited)
Air Passenger with Dark Glasses (uncredited)
Diane's Mother (US TV version) (uncredited)