The runaway international No.1 bestseller that launched Tom Clancy's spectacular career – became a blockbuster film – and introduced Jack Ryan. THE HUNT IS ON... Silently, beneath the chill Atlantic waters, Russia's ultra-secret missile submarine, the Red October, is heading west. The Americans want her. The Russians want her back. With all-out war only seconds away, the superpowers race across the ocean on the most desperate mission of a lifetime.