Bourne Supremecy by Robert Ludlum

Further intrigue and suspense as David Webb is forced to hunt an imposter Jason Bourne or risk losing his wife, Marie. David finds himself thick in Chinese conspiracies and national zealotry deep in the Orient as he struggles to be Jason Bourne in order to stay alive while not losing grip of David Webb. The battle within his mind rages while he tries to turn the tables from being hunted to being hunter.