VERY long and not much to recommend it. Annabeth Gish is beautiful, but dies early on. Dennis Quaid is good as Doc Holliday. Skip this and see "Tombstone" instead.
Leonard Maltin/Plot synopsis:
Epic-length biography shows how fate and circumstance turned the fabled Earp into a hardened and heartless man who killed in the name of law and order. Good storytelling for quite a while, but grows ponderous toward the end, as Earp is driven by revenge against his blood enemies from the O. K. Corral. Quaid makes a colorful Doc Holliday, though his equally flashy ladyfriend Big Nosed Kate (Rossellini) disappears just as we get to meet her! Special video edition runs 20m. longer! Panavision.