Stone is the Head of an elite arm of the Joint Chiefs of Staff―and a master of the sophisticated art of debriefing. When Oleg Kulakov defects from Russia, handcuffed to a sealed diplomatic pouch, it's Stone's job to find out if he's genuine. He uncovers Kulakov’s every secret, probes the darkest reaches of Kulakov’s heart, and penetrates Russia itself to learn the chilling truth―a truth that tears his own world apart.