Trivia

This was originally going ahead as a Costa Gavras project in 1974.

Isabelle Sadoyan, who plays the woman at the medical exam, waited a month before accepting her role, which required her to appear completely naked at the age of 47. "I hesitated because of my body," she revealed in 1985. "The shooting went very well, very simply, thanks to the way Losey protected me. I did not want to go to the private screenings, I was ashamed. I said to myself: I am going to make myself beautiful, put on my pretty silk dress... Finally, I saw the film in the theater. The first time, I left. I was sitting next to a spectator, and when she saw me, naked, she cried out: 'How horrible!' It took me months to get over it. "

This film has a 100% rating based on 12 critic reviews on Rotten Tomatoes.

When Mr Klein is entering the room at the castle where a small orchestra is playing, the first musician playing the cello on the right is Maurice Baquet, a multi-talented actor who was a great cello player.

Tina Aumont has a small uncredited role, as a nightclub customer. When she was strolling by Pigalle in Paris, director Joseph Losey, who was filming in the area, recognized her and gave her the part.