Duel at Diablo is a western film starring James Garner in his first Western since leaving Maverick and Sidney Poitier in his first Western. Based on Marvin H . Albert's novel Apache Rising, the film was written by Albert and Michael M. Grilikhes and directed by Ralph Nelson who had directed Poitier in Lilies of the. Western · In Apache territory, a supply army column heads for the next fort, an ex- scout searches for the killer of his Indian wife, and a housewife abandons her husband in order to re-join her Apache lover's tribe. 29 Jul Frontier scout Jess Remsberg (James Garner) is crossing the desert when he spots a dead army scout and group of Apaches pursuing someone -- it turns out to be a white woman, Ellen Grange (Bibi Andersson); he gets her away from them and returns her to her home and her husband Willard (Dennis.