Around the world, Treadstone agents are being hunted down and murdered... and Jason Bourne may be next on the list. Someone high up in the U.S. government is erasing all evidence of a shocking mission from Bourne's past, known as Defiance – and that evidence includes Bourne himself. Staying one step ahead of a team of killers, Bourne follows a global trail that leads him to one of the government's darkest secrets. But exposing the truth about the Defiance mission will also bring Bourne face to face with his arch-enemy, the assassin known as Lennon, for a final deadly confrontation.