Barbara Wilson

Diane Wilson

Sten Gester

Erik Engström

Robert Burton

Dr. Frederick Wilson

Bengt Blomgren

Col. Robert Bottiger

Åke Grönberg

Dr. Henrik

John Carradine

Narrator (US Re-Edit)

Gösta Prüzelius

Dr. Walter Ullman

Brita Borg

Singer (uncredited)

Doreen Denning

Anna (uncredited)

Ittla Frodi

Girlfriend in Volvo (uncredited)

Lars Åhrén

The Monster (uncredited)

Steve Conte

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

Fred Hoffman

Doctor (US TV version) (uncredited)

Allan Johansson

(uncredited)

G.J. Mitchell

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

Virgil W. Vogel