"Arthur Simon Simpson is a small-time crook biding his time in Greece. One of his potential victims turns out to be a gentleman thief planning to steal the emerald-encrusted dagger of the Mehmed II from Istanbul's Topkapi Museum."
Melina Mercouri
as Elizabeth Lipp
Peter Ustinov
as Arthur Simon Simpson
Maximilian Schell
as Walter Harper
Robert Morley
as Cedric Page
Jess Hahn
as Hans
Gilles Ségal
as Giulio
Akim Tamiroff
as Gerven the Cook
Titos Vandis
as Harback
Ege Ernart
as Major Ali Tufan
Senih Orkan
as First Shadow
Danyal Topatan
as Second Shadow
Joe Dassin
as Joseph
Despo Diamantidou
as Voula
Faik Coşkun
as Tavla Player at Hilton (uncredited)
Amy Dalby
as Nanny (uncredited)
Jules Dassin
as Turkish Cop (uncredited)
Selahattin Içsel
Bedri Çavusoglu
as Police Officer (uncredited)
Producer
Henri Alekan
Director of Photography
Monja Danischewsky
Screenplay
Director
Roger Dwyre
Editor
Eric Ambler
Novel
Manos Hatzidakis
Original Music Composer
Philippe Brun
Second Unit Cinematographer
Max Lechevallier
Assistant Camera
Max Douy
Set Decoration
Daniele Grimberg
Assistant Editor
Second Assistant Director
Roger Corbeau
Still Photographer
Raymond Picon Borel
René Chabal
Deni Vachlioti
Costume Design
Gilbert Chain
Camera Operator
Amato Garbini
Makeup Artist
Jacques Douy
Assistant Set Decoration
André Labussière
Set Dresser
Johnny Dwyre
Claude Hauser
Assistant Production Manager
Ali Çakus
André Cultet
Production Manager
Stepan Melikyan
William Robert Sivel
Sound Engineer
Lucie Lichtig
Script
Associate Producer
Patrick Clement-Bayard
Tom Pevsner
Assistant Director
Jean Fouchet
Title Designer
Lee Katz
Giancarlo Del Brocco
Visual Effects