The director originally designed the ending when Case witnessed Walter walk into the gas chamber.
The protagonist Walter Neff was originally called Walter Nice, but Billy Wilder later discovered that there was a man named Walter Nice who lived in Beverly Hills and happened to be an insurance salesperson, in order to avoid causing him It was changed to Walter Neff.
There is a scene in the film where Walt and Phyllis cannot start the car after committing the crime. This scene is a plot later expanded by director Billy Wilder, because Billy Wilder cannot start the car after finishing the day of shooting. car.
The golden wig worn by Barbara Stanwick was the idea of director Billy Wilder.
In the process of writing the script, Billy Wilder and Raymond Chandler did not get along well, and the two often had disputes.
The role of Walter Naif was originally played by George Laft; because George Laft insisted on a diametrically opposite ending to the original, this also caused him to lose the opportunity to star in the film.
