This was the last of Humphrey Bogart's mobster roles until he reprised the role of Duke Mantee in The Petrified Forest (1955). Although he sometimes played criminals after this film, his characters weren't members of any organized crime gang.
This film marks the third time Bogart took a rôle because George Raft backed out of doing the part. Warner Brothers gave the lead to Bogart after Raft left High Sierra (1941), The Maltese Falcon (1941), and finally The Big Shot (1942). Those three rôles, in addition to Black Legion (1937) allowed Bogart the opportunity to show more complex layers to his acting than the typecast gangster rôles he'd been given up to then. It could be argued that Bogart's talent guaranteed he would have become an A-list actor eventually, but Raft's refusals brought him his break sooner.
Martin Fleming mentions the telephone number for police headquarters is SPring-3100. That was the real number for the New York City Police Headquarters at the time, which was located at 240 Centre Street in Manhattan. In 1988 the building was converted into luxury apartments.
This film's earliest documented telecast took place in Tucson Sunday 2 December 1956 on KDWI (Channel 9); it first aired in Salt Lake City Tuesday 12 February 1957 on KUTV (Channel 2), in Sacramento CA Tuesday 19 February 1957 on KCRA (Channel 3), in Chicago Sunday 17 March 1957 on WGN (Channel 9), in Indianapolis Saturday 23 March 1957 on WTTV (Channel 10), in Los Angeles Monday 29 April 1957 on KTLA (Channel 5), and in Phoenix Friday 31 May 1957 on KOOL (Channel 10).