Donald Wolfit

Doctor Callistratus

Vincent Ball

Dr. John Pierre

Barbara Shelley

Madeleine Duval

Victor Maddern

Carl

William Devlin

Kurt Urach

Andrew Faulds

Chief Guard Wetzler

John Le Mesurier

Chief Justice

Bryan Coleman

Monsieur Auron

Cameron Hall

Drunken Doctor

George Murcell

First Guard

Julian Strange

Second Guard

Bruce Wightman

Third Guard

Barbara Burke

Housekeeper

Bernard Bresslaw

Tall Sneak Thief

Hal Osmond

Small Sneak Thief

Milton Reid

Executioner

Patricia Phoenix

Woman

Jack Carter

Man in Court (uncredited)