What if Holden Caulfield were around when John Lennon was shot? In 1980 John Lennon was killed by Mark David Chapman, who believed he was Holden Caulfield, narrator of the classic "The Catcher in the Rye." After the shooting, Chapman remained on the scene calmly reading the book, which he later offered to police as his statement. "Catcher's Keeper" asks the question, "What if Holden could have met Chapman, learned of his plan, and tried to prevent the assassination?"