The Killer (1921)

Henry Hooper, suspected of murder, is living on the Arizona-Mexican border and persuades his partner, Emory, to visit him there with his children, Ruth and Bobby. He steals the written evidence of their partnership and has Emory killed by his Mexican henchman. A neighboring rancher, William Sanborn, perceives the peril of the children when he visits the ranch and returns to rescue them. Hooper is killed.