Lassiter, Jane Withersteen, and the young orphan Fay Larkin were imprisoned in a valley years ago, and now live like primitive people. A relative of Lassiter's named John Shefford goes in search of them. Before he can find them, a Mormon elder named Waggoner is able to enter the valley, where he finds the trio. He kidnaps Fay, now a young woman, and brings her to a desolate area where she is kept with other women. When United States marshals raid the Mormon settlement, they bring charges of polygamy against all the women living there. Shefford sees Fay during her trial and falls in love with her. He rescues her and rides away with her, and then attempts to rescue Lassiter and Jane. When Waggoner pursues, he is killed by an Indian. Waggoner's followers continue the pursuit. Shefford, Fay, and the others are saved when marshals, warned by the Indian, arrive.
Did You Know?
The FOR THE MOVIE FANS column on page 2 of the Santa Cruz Evening News, Santa Cruz, California on Tuesday 14 May 1918 (Volume XXII, Number 12) lists the following item, probably from a United Press dispatch, "William Farnum and his company soon will leave for the Grand canyon of Arizona to produce two movies." These will be "Riders of the Purple Sage" and "The Rainbow Trail'", in which of both Farnum portrays Lassiter, Texas Ranger. See more
Remade as The Rainbow Trail