I guess the story should be related for those unfamiliar with it. When Howard Hawks was making the movie version, he contacted the author, Raymond Chandler, because he couldn't figure out who'd killed one character. Chandler said something like "I don't remember. Let me check and get back to you".
When he got back to him, he said "I don't know".
Hawks included the scene anyway. The requirements of film forced him to leave out some things from the book, but he still ended up with a classic
noir.
Three screenwriters, among them William Faulkner and Leigh Brackett, who some may know as a science fiction writer; in fact, at the time of her death, she was working on the script for "The Empire Strikes Back". She was married to Edmond Hamilton, another Golden Age SF writer.