If you can completely forget the Matt Damon film that shares the same title, you may enjoy Robert Ludlum's novel "The Bourne Supremacy".
I saw and enjoyed the "Bourne" movies, but the film does not compare to the book as there is no resemblance whatsoever between the two. I nevertheless enjoyed the Ludlum novel slightly more. As for similarities: there is a character named Jason Bourne in both the film and novel. That's about it.
Jason Bourne, as we learned in the first novel, "The Bourne Identity", was a persona created by the U.S. government and a CIA operative named David Webb as a way of luring the world's greatest assassin, a man named Carlos, into the light. No one (alive) had ever seen Carlos, so Webb agreed to go deep undercover for three years by playing the role of a man named Jason Bourne, an equally brilliant and prolific assassin, except for the fact that Bourne wasn't real. Unfortunately, when Webb nearly dies in the Mediterranean and is awakened by an alcoholic doctor in a small fishing village, Webb discovers that he has amnesia. For nearly six months, with the aid of the doctor, Webb pieces tidbits of memories together. Unfortunately, they are memories of being Bourne, not Webb.
I know it sounds confusing; just read the first book...
"The Bourne Supremacy" takes place many years later. David Webb is a college professor, happily married to Marie (the woman he kidnapped, later fell in love with, and who ultimately saved his life), and has nearly recovered from his amnesia. Jason Bourne is a long-lost memory. That is, until several important diplomats are murdered in Hong Kong. A calling card left at the scene reveals that the killer is Jason Bourne. Only Webb, his wife, and a select few government agents knows that it is impossible. Clearly, someone is playing mind games, again, with Webb.
When Marie is kidnapped and taken to China, Webb must reluctantly dig deep and resurrect Jason Bourne, the killer.
I think what makes Ludlum's novels far superior to the films is the intense psychological drama: Webb is a man with two distinct personalities, one of which he wants nothing to do with anymore but must somehow control and use to save his wife. On the same token, Bourne hates Webb for being soft and emotional. The warring personalities within Webb's psyche is fascinating and the source of most of the suspense of the novel, moreso than the storyline involving international espionage, although the storyline (which involves a lot of 20th-century Asian history and a working knowledge of Maoist Communism) is also fascinating.
Great book by a great writer.