Alec Guinness

John Barratt / Jacques De Gue

Bette Davis

Countess

Nicole Maurey

Bela

Irene Worth

Francoise

Pamela Brown

Blanche

Annabel Bartlett

Marie-Noel

Geoffrey Keen

Gaston

Noel Howlett

Dr. Aloin

Peter Bull

Aristide

Leslie French

Lacoste

Alan Webb

Inspector

Maria Britneva

Maid

Eddie Byrne

Barman

Alexander Archdale

Gamekeeper

Peter Sallis

Customs Official

Jack Hetherington

Restaurant Customer (uncredited)

Harold Kasket

Night Porter (uncredited)

Sam Kydd

Man (uncredited)

Ernie Priest

Inspector's Colleague (uncredited)

Jack Sharp

Cafe Bar Patron (uncredited)

John Timberlake

Man Playing Dice in Cafe Bar (uncredited)