Mark Felt

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

Felt worked in several FBI field offices prior to his promotion to the Bureau's headquarters in Washington, D.C. 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 serving as Associate Director, Felt provided the Washington Post with critical information that eventually led to the resignation of President Richard M. Nixon in 1974. In 1980, Felt was convicted of violating the civil rights of people thought to be associated with members of the Weather Underground Organization, by ordering FBI agents to search their homes as part of an attempt to prevent bombings. He was ordered to pay a fine, but was pardoned by President Ronald Reagan during his appeal. In 2006, he published an update of his 1979 autobiography, The FBI Pyramid. His last book, written with John O'Connor, is titled A G-Man's Life. On June 14, 2012, the FBI released Felt's personnel file at the agency, covering the period from 1941 to 1978. It also released files pertaining to an extortion threat made against Felt in 1956.