In 1971 a man with a briefcase hijacked a Northwest Orient 727 flight. He ransomed the passengers for $200,000 and then jumped out of the plane. He has never been heard from since, leaving the end of his story open for everyone to write their own ending. Geoffrey Gray tells the story of D. B. Cooper, including every bit of minutia, every theory, and every crackpot who has claimed to be Dan Cooper since 1971. Geoffrey Gray also reads the audio book and he can’t help but ham it up every once in a while. There is also the occasional…