Rancher's law

"In a hot Arizona river basin, three bodies sway from ropes: men executed by their fellow ranchers. Hundreds of miles away, in Fort Smith, Arkansas, Deputy Marshal Luther Haskill hunts down a killer. But he is about to be chosen for a new mission: Major Gerald Bowen wants Haskill to go undercover and find out if the Arizona lynchings were a matter of justice or murder. Bowen is on a campaign to bring law to the frontier, and Haskill is the right...