Robert Ludlum's The Bourne Imperative (Bourne Series #10)

The man Jason Bourne fishes out of the freezing sea is near death, half-drowned and bleeding profusely from a gunshot wound. He awakens with no memory of who he is or why he was shot-and Bourne is eerily reminded of his own amnesia. Then Bourne discovers that the Mossad agent named Rebeka is so determined to find this injured man that she has gone off the grid, cut her ties to her agency, and is now being stalked by Mossad's most feared killer. Do the answers to these mysteries lie back in south…