John Lennon was one of the world's most influential people.Mark David Chapman was one of the most invisible. By the end of 1980, the Beatles had been broken up for a decade -- a decade John Lennon had spent in search of his true identity: singer, songwriter, activist, burn out. But now, he declared, it's the perfect time to be coming back. Except that Lennon was a marked man. As early as the Beatles' controversial 1966 American tour, during wh...
