The film takes place on the Northside of Indianapolis and took great pains to be accurate as to street names and locations within the city and Indiana in general
The original Broadway production had actor Paul Newman in the Bogart role but he was passed over for the movie because Bogart was a much bigger star
The character of Glenn Griffin was made older in the script so Bogart could play the part. Bogart said he viewed the story as "Duke Mantee grown up
Spencer Tracy was originally cast as Daniel Hilliard
Although he and Bogart were very good friends, both insisted on top billing, and Tracy eventually withdrew from the picture.Fredric March replaced Tracy