Who is Matt Kelly? Deceptively easygoing and adaptive, the FBI newbie is a loving son to his mother, a miserable failure to his politician father, a frustrating enigma to his girlfriend, an unproved quantity to his colleagues. But when a bomb kills his mother, Matt becomes a hunter-grimly determined to find her elusive killer. He turns for help to the legendary Allen Pecard, an expert in unidentified assailants and serial imposters. Pecard not only contributes to the investigation; he shares professional secrets and shows how Matt's inscrutable nature can be a gift, a key to his destiny. Their relationship deepens as they stalk their unknown prey back through time, uncovering a years-old murder and a chilling Vietnam-era war story. As they close in on the killer, the real question emerges. Not, Who is Matt Kelly? But, who will Matt Kelly become?