A ghost haunts the killing fields of Iraq. David Tarrant, a sniper who has never missed, discovers the shot that matters most isn't the one that kills—it's the one that saves. When he learns of a sister he never knew, a doctor in a Syrian refugee camp, Tarrant abandons his life as a contract killer to protect her. From the mountains of Iraq to the rooftops of Athens, through minefields and chemical weapons bunkers and the halls of Moscow power, he hunts the men who would start a world war. But the hardest target is his own soul. The marksman's final shot is mercy.
