In 1971, a man hijacked a commercial plane flying from Portland, Oregon, ordered bourbon and soda from his seat in 18E, showed the air hostesses his bomb, demanded $200 000 in ransom money, parachuted out of said plane in a black suit, and was never seen again.
In 1971, D.B. Cooper jumped out of a plane with a parachute and $200 000 in ransom money, never to be seen again.
In 1971, a man hijacked a plane, was given $200 000 in ransom money, parachuted out of said plane in a black suit, and was never seen again. It remains the only unsolved plane hijacking in US history.
History, recent and past, is full of unsolved cases where people vanished without a trace. Here are five of the most mysterious.