Watergate's Deep Throat
After five men were arrested for breaking into and trying to bug the offices of the Democratic National Committee in June 1972, Washington Post reporters Bob Woodward and Carl Bernstein began their investigation into what would become the country's biggest political scandal. Soon Watergate came to stand for far more than just the burglarized building and would lead to President Richard Nixon's resignation in 1974. Aiding Woodward and Bernstein as they connected the dots between the break-in and the White House was an informant whose identity remained a secret for a good 33 years. In 2005 — decades after the journalists won Pulitzers and All the President's Men won Oscars — former deputy director of the FBI Mark Felt revealed that he was the mysterious "Deep Throat."