chunk: Valentine "Val" McKee and Earl Basset work as handymen in Perfection, Nevada, an isolated ex-mining settlement in the high desert east of the Sierra Nevada mountains. They eventually tire of their jobs and leave for Bixby, the nearest town. As they leave, they discover another resident, Edgar Deems, dead on top of an electrical tower, though still holding onto the tower's crossbeams, along with his .30-30 Winchester rifle. Jim Wallace, the town doctor, determines that Edgar died of dehydration, apparently afraid for some reason to climb down.
  Later on, an unknown force kills shepherd Old Fred and his flock of sheep. Upon discovering his severed head buried in the sand, Val and Earl become convinced that a killer is on the loose; they head back to town to warn the other residents. Two construction workers who ignore Val and Earl's warning are killed by the same force, causing a rockslide.