He first garnered acclaim at the 1953 Cannes Film Festival for a supporting role in Jean Dreville 's '' Horizons sans fin '' and over the next few years , notably as the romantic lead in André Michel 's '' La sorcière '' ( 1956 ) and in Jules Dassin 's '' Celui qui doit mourir '' ( '' He Who Must Die '' , 1957 ) . It was at the presentation of " La Sorcière " , at Cannes , where he met a creative and an intellectual counterpart in Louis Malle . Two years later he made his international box-office breakthrough as '' Julien Tavernier '' in Malle 's first feature film , '' Ascenseur pour l'échafaud '' ( '' Elevator to the Gallows '' , 1958 ) . He is probably most known for originating the role of '' Philippe Greenleaf '' in the French adaptation of '' The Talented Mr. Ripley '' ( '' Plein soleil '' , René Clément , 1960 )
1953 Cannes Film Festival
1953 Cannes Film Festival
Maurice Ronet