Peter Sellers

Auguste Topaze

Herbert Lom

Castel Benac

Leo McKern

Muche

Michael Gough

Tamise

John Neville

Roger

Martita Hunt

Baroness

Nadia Gray

Suzy

Anne Leon

Mrs. Tamise

Billie Whitelaw

Ernestine

Joan Sims

Colette

John Le Mesurier

Blackmailer

Pauline Shepherd

Lilette

Thomas Gallagher

Policeman (uncredited)

Peter Sellers