A well-researched biography about the public and private life of J. Edgar Hoover—former FBI director and America's most controversial law enforcer—that draws on previously unknown personal documents, a study of FBI files, and the presidential papers of nine administrations.Secrecy and Power is a full biography of former FBI director, covering all aspects of Hoover's controversial career from the Red Scare following World War I to the 1960s and his personal vendettas against Martin Luther King and the civil rights and antiwar movements.