The Greatest Unsolved Mysteries of All Time | Undercover History Updates S1 MEGA EPISODE | Nat Geo

National Geographic

Mystery of the Disappearing Skyjacker In 1971, a man calling himself Dan Cooper hijacked a plane and requested $200,000. Cooper escapes with the money and is never seen again. Now with new evidence, experts hope to solve this heist. Dark Secrets of the CIA It's the Cold War's dirty little secret: a