The musical scoring (by Miklós Rózsa) is extremely scant, occurring only for the main titles, continuing through the opening sequence up to the point where Handley enters the café, and then returns some 107 minutes later when Handley and Doll return to his boyhood farm. Total scoring just under 6 minutes.
Both director John Huston and star Sterling Hayden were members of the Committee for the First Amendment, which stood against the blacklisting of alleged Communists working in the film industry during the Red Scare. Huston had never been a Communist, although Hayden at one point had been.
First feature film role for Brad Dexter in which he was actually credited as Brad Dexter. In his previous credited roles he was credited as Barry Mitchell, but for this film, director John Huston convinced him to change his professional name to Brad Dexter. Dexter decided to keep the name.
The poster showing Marilyn Monroe in a purple dress was created much later, after she became a household name. Marilyn Monroe was basically unknown when the film was made in 1950, and only has a very small role. She certainly wouldn't have been given top billing at the time. In fact, she wasn't named on the original posters at all.
All of the dialogue spoken by Alberto Morin, who played Eddie Donato, was dubbed in by another actor--probably because Morin, who was born in Puerto Rico, had a pronounced Puerto Rican accent and Eddie Donato was supposed to be Italian.