Narrated in a straightforward, hardhitting documentary style, The Undercover Man is a good crime-busting saga. Standout features are the pic’s sustained pace and its realistic quality. Fresh, natural dialog help to cover up the formula yarn, while topnotch performances down the line carry conviction. Joseph H. Lewis’s direction also mutes the melodramatic elements but manages to keep the tension mounting through a series of violent episodes [based on an article, Undercover Man: He Trapped Capone, by Frank J. Wilson and a story outline by Jack Rubin].
Glenn Ford plays a Government Treasury agent on the trail of an underworld czar. Aiming to nail the racketeer on a tax-evasion rap, Ford attempts to contact some stoolpigeons but the syndicate knocks them off before they can squeal.
Ford bolsters his conventional part with a sincere, matter-of-fact performance.