The Scorpio Illusion by Robert Ludlum

Tyrell Hawthorne was a naval intelligence officer - one of the best - until the rain-swept night in Amsterdam when his wife was murdered, an innocent victim of the games spies play. Now Hawthorne has been called out of retirement for one last assignment. For he is the only man alive who can track down the world's most dangerous terrorist. Amaya Bajaratt is beautiful, elusive, deadly - and she has set in motion a chilling conspiracy that a desperate government cannot stop. With the life of the president hanging in the balance, Hawthorne must follow Amaya's serpentine trail to uncover the sinister network who exist to help this consummate killer. And Hawthorne must discover the shattering truth behind the Scorpio Illusion ...