Spoiler : Born in Stamford, Connecticut 8/3/1915; died 9/6/2003 of undisclosed causes at a hospital in Greenport, New York. Married to Broadway director Jed Harris (?-?); director and teacher Stanley Gould (?-?). Platt was the daughter of a U.S. Navy doctor. She grew up in Annapolis, Maryland. She made her Broadway debut in 1936. Screen debut in I Met My Love Again (1938). At time of death was last surving cast member of 1939's Stagecoach. Last movie was Street of Chance (1942). Television actress during the 1950s to middle 1960s. Ruth Jannings Holden #2 on the CBS-TV soap, The Guiding Light (1958-1959).