Dr. Victor Stein

Peter Cushing

Acting

Dr. Hans Kleve

Francis Matthews

Acting

Margaret Conrad

Eunice Gayson

Acting

Karl

Michael Gwynn

Acting

Bergman

John Welsh

Acting

Fritz

Lionel Jeffries

Acting

Dwarf

Oscar Quitak

Acting

Up Patient

Richard Wordsworth

Acting

Inspector

John Stuart

Acting

Kurt

Michael Ripper

Acting

President

Charles Lloyd Pack

Acting

Molke

Arnold Diamond

Acting

Countess Barscynska

Marjorie Gresley

Acting

Vera Barscynska

Anna Walmsley

Acting

Janitor

George Woodbridge

Acting

Boy

Ian Whittaker

Art

Girl

Avril Leslie

Acting

Manservant (uncredited)

John Tatham

Acting

Kleine (uncredited)

Eugene Leahy

Acting

Policeman (uncredited)

Charles Gilliard

Acting

Patient (uncredited)

Jimmy Charters

Acting

Inga (uncredited)

Julia Nelson

Acting

Joseph the Groom (uncredited)

Robert Brooks Turner

Acting