An out of jail convict, ""Idaho"", returns to town. His mission: to kill Gene for jailing him. He fails, thanks to a naturalist named Kent, who is really a part of a raider gang who are trying to gain possession of a ranch which belongs to Gene's friend, Jim Watson, and his niece, Susan. Pat discovers that the ranch is the hiding place for gold. Gene brings in the raiders, and Susan is back on friendly terms with him.

Gene and Pat are called in to track down the ""Black Rider"", an outlaw who wears a black suit and hat. The outlaw is terrorizing the town, and plans revenge on the town for an execution of a killer. The sheriff is wounded, and Gene assumes the job. As it turns out, the Black Rider is a woman! Pat discovers this, and rides to tell Gene, who sneaks over to the outlaw's property. Gene (with the sort of help from Pat), Gene is able to capture this Black Rider when she doesn't expect it.