Mark David Chapman Recounts How He Killed John Lennon To Barbara Walters

On December 8, 1980, music legend John Lennon crossed paths with a lonely, suicidal fan in front of his New York City apartment. Hours later, Lennon was murdered in cold blood, shot in the back four times. Barbara Walters shares her disturbing interview with Lennon’s murderer, Mark David Chapman, and traces his steps leading up to the crime.