This film is an "Unidentified Erotic Object". The scenario is strange and labyrinthine. We often get lost in this labyrinth, hesitating between real, dreamlike or fantasized scenes. The casting is exceptional, with Jean-Louis Trintignant and Philippe Noiret, two huge stars of European cinema as well as Joëlle Coeur and Sylvia Christel, two icons of erotic movies. The aesthetics of the film are impeccable. Each scene is composed like a painting or like an opera, the sets are sumptuous, the girls are gorgeous and the photography is splendid . It is therefore a real high level visual delight. The perversions to which the residents of the mansion are subjected are filmed with such a level of aestheticism and artistic composition that they appear acceptable. Which is a real "tour de force". We should not seek to discuss the verisimilitude or the absurdity of certain script or visual choices, we just have to get carried away in this sweet erotic delirium which travels to the limits of reality and the strangest fetishistic fantasies without ever falling into vulgarity or ugliness. On the contrary, everything is beautiful! And that is already a reason good enough to watch this film by agreeing to leave in the locker room its prejudices on what is acceptable or not in the matter. In the midst of the many European erotic productions of the 70s, this film is a little gem to discover!