The Twist (1976)

In Paris, the successful American writer William Brandels lives with his French wife Claire Brandels De La Tour Piquet a loveless marriage without sex. Claire's niece Nathalie De La Tour Piquet lives in the apartment with the couple and Gretel is their maid. Claire has a love affair with William's publisher Jacques Lavolet. When William does not win the Zola Prize, he becomes upset and has a writer's block. When Claire meets William's Italian translator Charlie Minerva in the release of his new book, she learns that Jacques gave a jewel to her, and she becomes upset with him. When she witnesses William walking with Charlie and her daughter through the streets of Paris, she becomes jealous of her husband and tries to rekindle their love. Will she succeed?