Mark Felt

William Mark Felt, Sr. (August 17, 1913 – December 18, 2008) was an agent of the Federal Bureau of Investigation (FBI), who retired as the Bureau's Associate Director in 1973. After denying his involvement with reporters Bob Woodward and Carl Bernstein for 30 years, Felt revealed himself to be the Watergate scandal's whistleblower, "Deep Throat," on May 31, 2005.

During the early investigation of the Watergate scandal (1972–1974), and shortly after the death of longtime FBI Director J. Edgar Hoover on May 2, 1972, Felt was the Bureau's Associate Director, the second-ranking post in the FBI. While Associate Director, Felt provided Washington Post reporter Woodward with critical information on the story that eventually led to the resignation of President Richard M. Nixon in 1974.…more