History's Secrets — Season 1, Episode 5: The Secrets Of J. Edgar Hoover

Episode synopsis

For 20 years, FBI Director J. Edgar Hoover denied the existence of the mafia. Was it because he was being blackmailed by them, with the threat of being exposed as a gambler and cross-dresser?

About History's Secrets

Mysterious events, compelling figures, and great unanswered questions from the past are explored in this National Geographic series.

More episodes from Season 1

• E1The Hunt for Hitler
• E2The Hunt for the Boston Strangler
• E3The Romanovs
• E4The Real Roswell
• E6Where's Amelia Earhart?
• E7Howard Hughes Revealed
• E8The Unabomber: Ted Kaczynski
• E9Secrets of the Moon Landing
• E10CIA Secret Experiments
• E11Secret History of the Atomic Bomb
• E12Vanished from Alcatraz
• E13Secret Life of Charles Lindbergh