Half-brothers Stefane and Antony despise their biological father, callous millionaire Charles Calvert. Because Charles refuses to share his wealth with his sons, Stefane and Antony ask hip American thrill-seeker Duffy to help steal the money they believe is their birthright. When Charles decides to move a large portion of his savings from Morocco to France, Duffy has an opportunity to stage a daring burglary attempt at sea.

James Coburn
as Duffy

James Mason
as Charles Calvert

James Fox
as Stefane Calvert

Susannah York
as Segolene

John Alderton
as Antony Calvert

Guy Deghy
as Captain Schallert

Carl Duering
as Bonivet

Tutte Lemkow
as Spaniard

Marne Maitland
as Abdul

André Maranne
as Garain
CinemaSerf
Though this takes quite a while to warm up, the actual heist caper stuff is quite fun to watch. James Mason "Calvert" is a bit of a crook. A sophisticate, but a crook nonetheless. He has two rather put-upon sons in "Stefane" (James Fox) and "Antony" (John Alderton). The sons are fed up with their pe...