La Piscine (The Swimming Pool) is a 1969 Italian-French film directed by Jacques Deray, starring Alain Delon, Romy Schneider, Maurice Ronet and Jane Birkin. Set in summertime on the Côte d'Azur, it is a drama of sexual jealousy and possessiveness.
Jean-Paul, a writer, and Marianne, his girlfriend of just over two years, are holidaying at a friend's villa. There is a tension in their relationship which excites Marianne: the film begins with a scene in which they are together beside the villa's swimming pool and she urges him to claw her back. He does as she asks, but then throws her into the pool and jumps in after her. In a later scene he takes a branch and uses it to lash her bare buttocks, playfully but with a force that increases as the scene cuts away.
Harry, an old friend and record producer, arrives for a visit, surprising the couple by bringing his 18-year-old daughter Penelope of whose existence they have not previously known. Before Jean-Paul knew Marianne, Harry was her lover.
The four stay together. As the days go by, Harry draws Marianne back towards him. He taunts Jean-Paul for having given up serious writing to work in advertising, and drinks a great deal, throwing a
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