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.
Carole Bouquet's debut.