Walter J. Ciszek, S.J. (1904-1984), was a Polish-American Jesuit priest known for his missionary work in the Soviet Union during and after World War II. He was eventually arrested by the Soviets as a spy and spent fifteen years in the Gulag. He was released and returned to the United States in 1963, after which he wrote two books, including the memoir With God in Russia, and served as a spiritual director. Since 1990, Ciszek has been under investigation by the Roman Catholic Church for anonization. His current title is Servant of God.