Isfimovies - The Undercover Man (1949)Frank Warren is a treasury agent assigned to put an end to the activities of a powerful mob crime boss. Frank works undercover, posing as a criminal to seek information, but is frustrated when all he finds are terrified witnesses and corrupt police officers.Joseph H. LewisGlenn Ford, Nina Foch, James Whitmore, Barry Kelley, Frank Tweddell, Howard St. John, John F. Hamilton, Leo Penn, Joan Lazer, Esther Minciotti, Angela Clarke, Anthony Caruso, Robert Osterloh, Kay Medford, Patricia Barry, David Wolfe