Biopic of J. Edgar Hoover (Leonardo DiCaprio) told by Hoover as he recalls his career for a biography. Early in his career, Hoover fixated on Communists, anarchists, and any other revolutionary taking action against the U.S. government. He slowly builds the agency's reputation, becoming the sole arbiter of who gets hired and fired. One of his hires is Clyde Tolson (Armie Hammer), who is quickly promoted to Assistant Director and was Hoover's confidant and companion for the rest of Hoover's life....