In 1971, an unidentified man hijacked a plane and extorted $200,000 in ransom (over $1.2 million in today's money). He parachuted from the plane mid-flight to escape, and the FBI spent decades searching for him. This page goes into detail about the actual events, the suspects, and some interesting theories about who this mystery man actually is (and how he pulled off "the only unsolved case of air piracy in commercial aviation history").