Robert Hudson Walker was an American actor, best remembered for his starring role as the villain in Alfred Hitchcock`s thriller Strangers on a Train (1951), which was released shortly before his death. He started with boy-next-door roles, often as a World War II soldier. One of his films he featured opposite his first wife, Jennifer Jones, in the World War II epic Since You Went Away (1944). He also played Jerome Kern in Till the Clouds Roll By. Twice divorced by 30, he suffered from alcoholism and mental illness, which were exacerbated by his painful separation and divorce from Jones. In his final film, Walker played the title role of Leo McCarey`s My Son John (1952), made at the height of the Red Scare. He passed away on August 28, 1951, at the age of 32.