Hugh Lombard
Hugh O'Brian
Ann Clyde
Shirley Eaton
Narrator (voice)
Bill Mitchell
Mr. U.N. Owen (voice)
Christopher Lee
Mike Raven
Fabian
General Mandrake
Leo Genn
Det. William Henry Blore
Stanley Holloway
Judge Arthur Cannon
Wilfrid Hyde-White
Ilona Bergen
Daliah Lavi
Dr. Edward Armstrong
Dennis Price
Elsa Grohmann
Marianne Hoppe
Joseph Grohmann
Mario Adorf
Screenplay
Harry Alan Towers
Producer
Director
George Pollock
Novel
Agatha Christie
Dudley Nichols
Director of Photography
Ernest Steward
Original Music Composer
Malcolm Lockyer
Harry M. Popkin
Executive Producer
Oliver A. Unger
Editor
Peter Boita
Art Direction
Frank White
Makeup Artist
Gerry Fletcher
Sound Editor
Peter Keen