Riders of the Purple Sage tells the story of Jane Withersteen and her battle to overcome persecution by members of her polygamous Mormon fundamentalist church. A leader of the church, Elder Tull, wants to marry her. Withersteen gets help from a number of friends, including Bern Venters and Lassiter, a notorious gunman and killer of Mormons. She struggles with her "blindness" to the evil nature of ...