Harlan Creed The Adjudicator #1 Gauntlet of Blood by Ramsey Brewster

Three murdered hunters. A territory on the brink of war. Federal Adjudicator Harlan Creed must uncover the truth before vengeance erupts. But with a deadly canyon ambush, a ruthless cattle baron, and a brilliant Comanche war chief in his path, justice may come at the end of a gun.