Turk Tremaine's arrival in town raises Carter's suspicions. Claiming to be Jacobs' mining partner, the quiet gunslinger is hungry for revenge. But more miners are attacked, and Carter must enlist Turk's help to overthrow the invisible menace hiding in the hills. Joined in the fight by two strange travelers, the men uncover a plot to destroy Marysville. Can they stop the murdering thieves before their peaceful town is torn apart?