"Riders Of The Purple" concerns the Rafter T Ranch, and the Bar L Ranch. These two co-operated for twenty years before Jim Bartlet of the Two Bar managed to split the ranches into feuding factions before a bitter winter added disaster upon disaster. In "South Of The Law Line" Texas Ranger Bill Douglas has crossed the border with Mexico in pursuit of an American outlaw who calls himself The Hawk. Chavez, considered an outlaw by the rurales, starts out allied with The Hawk, but he learns from that masterful criminal the art of the double-cross. In "High Jack And Low" Eduardo Martinez Chavez is wanted by the rurales for being a revolutionary leader and outlaw, but he finds an ally in Bill Douglas who is working undercover. The tension builds as forces collide in the Sonoran desert.