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 as Tavla Player at Hilton (uncredited)

Bedri Çavusoglu as Police Officer (uncredited)