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The working title of this film was Hear No Evil. Universal borrowed January Sterling and Mona Freeman from Paramount for the film. The studio cast real figures from the boxing world, including fighter Harry Guardino, who played "Paul's" brother "Lou," and referee Frankie Van, who acted as the film's technical advisor and played the referee in the "Logan" fight scene. Guardino went on to a long acting career in film, stage and television. The film also marked the first screenplay of writer Bernard Gordon (1918-2007).
According to an October 1951 Hollywood Reporter news item, Tony Curtis broke his thumb during a boxing workout before the production began, but director Joseph Pevney was able to start the film on time by postponing fight scenes until the end of the shooting schedule. Some scenes were shot on location in New York City. Flesh and Fury was Pevney's second boxing picture, after 1951's Iron Man (see below).