Watch Silver Range Full Movie Free Online 123Movies. Veteran cowboy star Johnny Mack Brown plays a cattle buyer turned prairie sleuth in this low-budget oater from Monogram, which co-stars perennial old-timer Raymond Hatton as a retired U.S. Marshal assigned to investigate the mysterious disappearance of a rancher. As the two old friends soon learn, a gang of smugglers headed by the town's banker (Frank LaRue) needs the use of the Flying Arrow Ranch for their nefarious purposes.