Robert Ludlums The Bourne Retribution
Bourne agrees to investigate, but he has his own agenda: revenge. The drug lord is responsible for the murder of Rebeka - one of the only people Bourne has ever truly cared for. But as Bourne attempts to avenge the woman he loved, he becomes embroiled in a monstrous world-wide scheme involving the Chinese, Mexicans, and Russians. Each step closer to vengeance is a step closer to his own death.