More on Howard Duff from Infoplease:

• The Naked City (1948) - Starring Barry Fitzgerald, Howard Duff, Dorothy Hart, Don Taylor, Frank Conroy
• While the City Sleeps (1955) - Starring Dana Andrews, Rhonda Fleming, George Sanders, Howard Duff, Thomas Mitchell
• Women's Prison (1955) - Starring Jan Sterling, Cleo Moore, Audrey Totter, Phyllis Thaxter, Mae Clark
• Brute Force (1947) - Starring Burt Lancaster, Hume Cronyn, Charles Bickford, Yvonne De Carlo, Ann Blyth