DB Cooper is the alias of an unidentified individual who, on November 24, 1971, hijacked a commercial airplane in the United States. He extorted $200,000 in ransom and then parachuted out of the plane, disappearing without a trace. The case remains one of the greatest unsolved mysteries in American criminal history. The FBI conducted an extensive investigation, but despite numerous leads and theories, Cooper's identity and fate remain unknown. The incident has inspired various books, documentaries, and even a film, contributing to the enduring fascination with the DB Cooper case and the allure of unsolved mysteries.