In 1971, a man operating under the pseudonym "Dan Cooper" hijacked a plane, stole $200,000, strapped the money to his body, and then parachuted into the darkness below. Who was he? What happened to the money? What happened to him?

Sources:

Unsolved Mysteries: Season 1, Episode 5 https://www.youtube.com/watch?v=vheOLu4p8MMFBI

Records: The Vault https://vault.fbi.gov/D-B-Cooper%20FBI

History: DB Cooper Hijacking https://www.fbi.gov/history/famous-cases/db-cooper-hijackingDB

Cooper wikipedia https://en.wikipedia.org/wiki/D._B._Cooper"DNA

Test Negative for D.B. Cooper Suspect; A New Sketch Emerges", New York Magazine, August 9, 2011 https://nymag.com/intelligencer/2011/08/dna_test_negative_db_cooper_su.html"Into

The Blast : The True Story of D.B. Cooper", Skipp Porteous, available in the OWWL system https://evergreen.owwl.org/eg/opac/record/414445?query=The%20Blast%20%3A%20The%20True%20Story%20of%20D.B.%20Cooper;qtype=keyword;locg=1

Watch on youtube https://youtu.be/z4T583wV5Y4