"I don't have a grudge against your airline, miss. I just have a grudge."

On November 24, 1971, a man using the pseudonym "Dan Cooper" hijacked a plane headed to Seattle. With very specific demands, Cooper was planning something big. In the cold dark night, Cooper jumped out of the airplane after taking two parachutes and a knapsack full of money. Cooper was never seen again. Who was Dan Cooper? Did he fall to his death that night? Or did he somehow make it out alive, and get away with the most famous air heist of all time?