According to screenwriter Jean-Claude Carrière, the reason Maria Schneider was dismissed from the film was her heavy drug use, which caused her to give a "lackluster" performance and caused tremendous friction between her and Buñuel.
Fernando Rey who plays Mathieu was actually dubbed by Michel Piccoli.
Luis cameo: as in 'Belle De Jour' and 'Phantom of Liberty' Bunuel does another walk-on in this film, immediately after Fernando Rey's first scene. Luis and his chauffeur are blown to bits on their way to the bank, victims of an unexplained terrorist attack.
Ángela Molina recalled her audition with Luis Buñuel: "I enjoyed it very much, and the first meeting I had at the studios seemed like going to see the doctor because - and I've not mentioned this before to anyone - he had to see me naked. There were nude scenes, and I imagine he needed convincing that I was what he required for his film, or whatever. He had to see the way I looked. I was wearing the same dressing gown that appeared in the film. He put his glasses on. It was a long changing room, and he was at one end of it, and then he said, with an absolutely loving and affectionately paternal smile... let's see, I don't remember what exact word he used, but I knew I had to expose myself. So, I opened my dressing gown for a moment like a little girl, because that's what I was. I was very innocent at that time. And then he put his glasses on immediately and said: "Cover yourself! Cover yourself! All this as though they were uncovering Tutankhamun's mummy," Molina laughing said.