seeing Virgil and his family off to California for their safety, Earp kills Frank Stillwell, foiling an attempted ambush orchestrated by Clanton. An appointment as a federal marshal then gives him the authority to pursue the others involved in the attacks on his brothers. Doc Holliday, a gambler who has been on the wrong side of the law himself more than once, assembles a posse to support the pursuit. The men locate Pete Spence, "Curly" Bill Brocius, and Andy Warshaw. In each case, Earp manipulates the circumstances to get his target to draw a weapon rather than simply surrendering, thus enabling Earp to kill them legally rather than make an arrest. Holliday calls Earp out on his tactics, but his strength gives out due to his tuberculosis and Earp transports him to a sanitarium in Colorado. With Clanton weakened, wealthy interests in Tombstone step forward to end the dispute, buying off the men supporting Clanton, which leads him to hide out in Mexico. To entice Earp to remain in Tombstone, the city's leading citizens tell him they are seeking an appointment for him as Chief U.S. Marshal that could one day make him the Adjutant general for the territory. Earp declines to give his answer to the offer immediately but tells Holliday that he is going back to Tombstone to accept the job. Holliday does not believe him and knows Earp is really going to Mexico to track down Clanton with the cooperation of the Mexican federal authorities. Holliday again joins Earp on the mission, which ends with a final showdown in which Earp shoots Clanton dead in a fast-draw duel between the two. Earp returns to the Colorado sanitarium to visit the ailing Holliday and says goodbye to his friend, telling him this time he really is returning to Tombstone. As he leaves, though, Earp admits to a visiting Tombstone elder that he's leaving the Southwest altogether, intending never to be involved in law enforcement again. Holliday glances at the countryside as his friend rides away and then resumes his poker game with his sanitarium health aide. Cast James Garner as Deputy City Marshal of Tombstone Wyatt Earp Jason Robards as Doc Holliday Robert Ryan as Ike Clanton Albert Salmi as Octavius Roy (prosecuting attorney) Charles Aidman as Horace Sullivan (defense attorney) Steve Ihnat as Andy Warshaw (Clanton man) Michael Tolan as Pete Spence (new Tombstone City Marshal) William