Paris Nous Appartient (Aka Paris Belongs to Us)

French drama set in 1957, in which a group of young Parisians grapple with inner turmoil and suffer existential crises. Literature student Anne (Betty Schneider) encounters the group when her brother, Pierre (François Maistre), takes her to a party with some of his friends and, despite feeling like a stranger, soon becomes enthralled by each person's mysterious background and the strange force that seems to plague them.