A man boards a plane in 1971, exchanges its passengers for a ransom of cash, and disappears. Discover the mystery of one of America's most fascinating missing persons in this collection of scenes from "D.B. Cooper: Case Closed?"
On April 3, 1996, a CBS news report announces the arrest of Theodore Kaczynski, the Harvard graduate who was suspected and later proven to be the Unabomber. Kaczynski terrorized the country for nearly two decades with a series of mail bombings that killed three people and wounded 23.