In this final volume of The Border Trilogy, two men marked by the boyhood adventures of All the Pretty Horses and The Crossing now stand together, in the still point between their vivid pasts and uncertain futures, to confront a country changing or already changed beyond recognition. In the fall of 1952, John Grady Cole and Billy Parham--nine years apart in age, yet with a kinship greater than perhaps they know--are cowboys on a New Mexico ranch encroached upon from the north, at Alamogordo, by the military. To the south, always on the horizon are the mountains of Mexico, looming over El Paso, Ciudad Juárez and all the cities of the plain. Bound by nature to horses and cattle and range, these two discover that ranchlife domesticity is compromised, for them and the men they work with, by a geometry of loss afflicting old and young alike, those who have survived it and anyone about to try. And what draws one of them across the border again and again, what would bind "those disparate but fragile worlds," is a girl seized by ill fortune, and a love as dangerous as it is inevitable.