- Fredric March's part was intended for Spencer Tracy, a good friend of Humphrey Bogart's, but neither Tracy nor Bogart was willing to concede top billing to the other.
- The exterior of the house used in the film is the same set used as the Cleaver home in the TV series "Leave it to Beaver" (1957).
- Humphrey Bogart's last tough-guy role.
- The first black and white movie in VistaVision.
- The Character of Glenn Griffin was made older so Humphrey Bogart could play the role. The stage version starred Karl Malden and a young Paul Newman in the Bogart role
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