Thomas Leo "Tom" Clancy Jr. (April 12, 1947 - October 1, 2013) was an American writer and screenwriter. His books are thrillers about politics, spys and the military. Most of his books include many technical details about their subjects. Seventeen of his novels were best-sellers, with over 100 million copies in print. His stories take place during and after the Cold War. He owned with some other people a Major League Baseball team. Clancy also produced popular video games.