Thomas Leo Clancy Jr. (April 12, 1947 – October 1, 2013) was an American novelist best known for his technically detailed espionage and military-science storylines set during and after the Cold War. Seventeen of his novels were bestsellers, and more than 100 million copies of his books are in print. His name was also used on movie scripts written by ghostwriters, nonfiction books on military subjects, and video games. He was a part-owner of the Baltimore Orioles and vice-chairman of their community activities and public affairs committees.
Clancy's literary career began in 1984 when he sold The Hunt for Red October for $5,000. His works, The Hunt for Red October (1984), Patriot Games (1987), Clear and Present Danger (1989), and The Sum of All Fears (1991), have been turned into commercially successful films. Actors Alec Baldwin, Harrison Ford, Ben Affleck, and Chris Pine have played Clancy's most famous fictional character, Jack Ryan. Another well-known character of his, John Clark, has been portrayed by actors Willem Dafoe and Liev Schreiber. Tom Clancy's works also inspired games such as the Ghost Recon, Rainbow Six, and Splinter Cell series. Clancy died on October 1, 2013, of an undisclosed illness.