In 1971, a hijacker leaps from a plane carrying a $200,000 ransom. The largest FBI manhunt in history comes up empty-handed. A clip-on tie, a dummy parachute, and bags of cash confuse the investigation. Copycats, false confessions, and tips lead to a series of dead ends. After 45 years, the case remains unsolved. What happened to DB Cooper? Did he escape to enjoy his fortune?