- Award Snub: Understandable given the context of the times and the nation's mood, but the film lost out the Best Picture prize to the much lighter Going My Way, while neither Fred MacMurray nor Edward G. Robinson were even nominated in the Best Actor or Best Supporting Actor categories.
- Composite Character: The book and movie were based off the real life murder of Albert Synder by his wife Ruth. Walter Huff/Neff was based of Ruth's lover and accomplice Henry Judd Gray, and the insurance salesman who was not physically involved in the murder and only charged with forgery.
- Ho Yay: That last scene really says it all:
Neff: Know why you couldn't figure this one, Keyes? I'll tell ya. 'Cause the guy you were looking for was too close. Right across the desk from ya.Keyes: Closer than that, Walter.Neff: I love you, too.
- Neutral Evil: Phyllis Dietrichson, who by her own admission is "rotten to the heart". Her best description would be the human version of a praying mantis.
- Values Dissonance: After the first mention of killing Phyllis' husband, Walter is keyed up so he goes to a drive-up restaurant and has a beer.