Cliff Robertson
David Frazer
Jack Hawkins
Colonel Drexel
Marisa Mell
Sophie
Michel Piccoli
Georges Sarrassin
Bill Fraser
Leslie Dunwoody
Charles Gray
Benson
John Le Mesurier
Sir Robert
Felix Aylmer
Henrickson
Christopher Witty
Prince Jamil
Tutte Lemkow
Paviot
Ernest Clark
Minister
Keith Pyott
Gustave
Jose Burgos
El Mono
Roger Delgado
Ahmed bin Fayed
James Payne
Russian Officer in Tent (uncredited)
Jerold Wells
Brindle (uncredited)
George Roderick
Officer at Circus (uncredited)
Crew
Basil Dearden
Director
Victor Canning
Novel
Michael Relph
Screenplay
William Goldman
Screenplay
Michael Relph
Producer
Philip Green
Original Music Composer
Otto Heller
Director of Photography
John D. Guthridge
Editor
Donald M. Ashton
Production Design
Jack Stevens
Art Direction
Beatrice Dawson
Costume Design
Jack Rix
Production Supervisor
John Peverall
Assistant Director
H. A. R. Thomson
Camera Operator
Penny Daniels
Continuity
C.C. Stevens
Sound Recordist
Gordon K. McCallum
Sound Recordist
Roy Baker
Sound Editor
Harry Frampton
Makeup Artist
Frank Turner
Makeup Artist
Bill Griffiths
Hairdresser
Charles Blair
Location Manager