John Knox and Grace Chu are back in the new Risk Agent novel— “another hit in this knockout thriller series” (Booklist) by the #1 New York Times bestselling author of Choke Point. Security operative John Knox and former Chinese Army spy Grace Chu have accepted a simple job in Istanbul: initiate the sale of a piece of ancient art worth millions to an anonymous client. But in Istanbul they find themselves in a melting pot of government agents and terrorists, where East meets West. Now Knox and Chu realize they are players in a bigger, more dangerous game than they ever imagined. Their client is himself a pawn in Iran’s nuclear program.As they move closer to the truth, they understand better their own vulnerability. They are not alone in wanting contact with this client.