The Bourne Series is a collection of action-thriller novels created by author Robert Ludlum. The series follows the story of Jason Bourne, a man suffering from amnesia who is trying to uncover his true identity while being pursued by various assassins and government agents. The first book, "The Bourne Identity," was published in 1980 and set the stage for Bourne's complex character and thrilling adventures. After Ludlum's death, the series was continued by author Eric Van Lustbader, who expanded Bourne's story in several sequels. The novels have also been adapted into a successful film series, starring Matt Damon as Jason Bourne, which further popularized the character and introduced him to a wider audience. The films are known for their intense action sequences and intricate plots.