Thomas Leo Clancy Jr. (April 12, 1947 – October 1, 2013) was an American
novelist best known for his technically detailed
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
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
Splinter Cell and
Rainbow Six series. Clancy died on October 1, 2013, of an undisclosed illness.