During the latter days of the Vietnam War, deep in-country, a young idealistic Marine named Donny Fenn was cut down by a sniper's bullet as he set out on patrol with Swagger, who himself received a grievous wound. Years later Swagger married Donny's widow, Julie, and together they raise their daughter, Nikki, on a ranch in the isolated Sawtooth Mountains in Idaho.
Then one idyllic day, a man, a woman, and a girl set out from the ranch on horseback. High on a ridge above a mountain pass, a thousand yards distant, a calm, cold-eyed shooter, one of the world's greatest marksmen, peers through a telescopic sight at the three approaching figures.
Out of his tortured past, a mortal enemy has once again found Bob the Nailer.