Produced by Trem Carr, this enjoyable B-Western featured the strapping Tom Tyler, a cowboy performer who historically worked well with children. The child in this case was freckled Andy Shuford, a tough little boy rider. Little orphaned Sandy is adopted by a reformed outlaw (Tyler, of course), but when the townsfolk discover Tyler's true identity they conspire to take the tyke away from him. The express office is robbed and Tyler is the obvious suspect. He is provided with a seemingly airtight alibi by the kid, who swears to have seen two of Tyler's enemies commit the crime. After the real culprits have been apprehended, young Sandy confesses that he never really saw anything but only "guessed correctly." Although based on an original screenplay by Wellyn Totman, Rider of the Plains bore a certain resemblance to the same year's The Sheriff's Secret, a Robert J. Horner misfire starring Jack Perrin.