Boris Morros (January 1, 1891 - January 8, 1963) was an American Communist Party member, Soviet agent, and FBI double agent. He also worked at Paramount Pictures, where he produced films as well as supervising their music department.Morros was born in Saint Petersburg, Russia. He emigrated with his family to America in 1922. In 1934 he was enlisted as a Soviet spy, following which time Vasily Zarubin became his first contact in 1936.The mysterious "Mr Guver" letter, sent to FBI Director J.