He stalks America in the company of ghosts, dealing death and justice. Are his victims chosen at random, or connected by threads of violence and lies? FBI agents Heller and Quillan want him stopped, but their investigation leads them into a maze of deceit and manipulation stretching back over the decades, putting their own lives in peril. Is their target a psycho, a vigilante, or something more? Is he the serial killer the FBI has named "The Zigzag Wanderer," or the unsung hero known only as -- ENEMY?!