In 1904, Miller took a contract for the murder of Frank Fore. On March 10, Miller followed his target to the Westbrook hotel, even as Fore was accompanied by three other lawmen: Dee Harkey, Jinx Clark, and Tom Coggins. Miller left the trio in the lobby and shot Fore in a restroom upstairs. Immediately afterward, Miller attempted to surrender to Harkey, but he refused to participate. Clark and Coggins later claimed that they witnessed the shooting and that Miller acted in self-defense. Fore died on March 13.