Alec Guinness

Character: Father Brown

Joan Greenwood

Character: Lady Warren

Peter Finch

Character: Gustave Flambeau

Cecil Parker

Character: The Bishop

Bernard Lee

Character: Inspector Valentine

Sidney James

Character: Bert Parkinson

Gérard Oury

Character: Inspector Dubois

Ernest Thesiger

Character: The Vicomte

Ernest Clark

Character: Bishop's Secretary

Everley Gregg

Character: Governess

Austin Trevor

Character: The Herald

Marne Maitland

Character: Maharajah

Noel Howlett

Character: Auctioneer

Eugene Deckers

Character: French Cavalry Officer

Jim Gérald

Character: French Stationmaster

Launce Maraschal

Character: Texan Millionaire

Daniel Clérice

Character: Garagiste

Aubrey Woods

Character: Charlie

John Salew

Character: Station sergeant

Sam Kydd

Character: Scotland Yard sergeant

John Horsley

Character: Inspector Wilkins

Jack McNaughton

Character: Railway Guard

Hugh Dempster

Character: Man in Bowler Hat

Betty Baskcomb

Character: French Widow

Diana Van Proosdy

Character: Waitress

Dino Galvani

Character: Italian Professor

Hugo Schuster

Character: Optician

Guido Lorraine

Character: Café Patron