Sexual tension simmers on the French Riviera in this echt-’60s, Euro-chic erotic thriller. Jane Birkin stars alongside Alain Delon, Romy Schneider, and Maurice Ronet as a quartet of tanned, toned, beautiful people who spend their summer swimming, lounging poolside, and trysting with one another amid the crystal-blue waters of the Côte d’Azur. But jealousy and a creeping sense of unease gradually infect their languorous idyll—erupting one evening with a shocking act of violence. Director Jacques Deray and co-writer Jean-Claude Carrière deliver a sultry, sun-baked master class in slow-burn suspense. Print courtesy of the Institut Français.