The film opens with literature student Anne who is reading Shakespeare when she hears sounds of distress in the next room. There she finds a Spanish girl who says her brother Juan has been killed by dark forces. Anne then meets with her own brother Pierre, who takes her to a party held by some of his friends. Initially bored and knowing nobody, she gradually becomes fascinated by mysterious interactions around her. Juan, a musician and
anti-Franco refugee, has recently died from a knife wound which some think was a suicide. Philip, an unsteady American refugee from
McCarthyism, gets drunk and later slaps a smartly dressed woman named Terry, accusing her of causing Juan's death by breaking up with him. Terry, who had also been the lover of Philip, is now together with theatre director Gérard. The next day, Anne meets with a friend who is an aspiring actor, and he takes her to a rehearsal of Shakespeare's
Pericles, the director of which proves to be Gérard. Because the actress for the part of Marina has not arrived, Anne is asked to read, and she performs well. Afterward she runs into Philip, who recounts long tales in veiled language about sinister interests that have destroyed Juan and may now get Gérard too. Anne becomes determined to resolve the mystery that is obsessing the lives of the people she met, including a missing music recording by Juan which Gérard had planned to use for his play, and predictions that Gérard might end up dead like Juan. Gérard eventually dies, either by suicide or the machinations of an ominous group which according to Philip and Terry is heading for world domination. Terry kills Pierre who is supposedly part of the conspiracy, but later admits that it might exist only in Philip's mind. ==Cast==