Leave your feedback Share Copy URL https://www.pbs.org/newshour/show/haunting-what-if-in-novel-on-the-jfk-assassination Email Facebook Twitter LinkedIn Pinterest Tumblr Share on Facebook Share on Twitter Story What if the glass bubble top on the car in which President John F. Kennedy was riding in Dallas had not been removed by a Secret Service agent? The NewsHour’s own Jim Lehrer explores that idea in "Top Down: A Novel of the Kennedy Assassination." Jim joins Judy Woodruff to discuss his personal experience that inspired the book.