Cast & Crew
Rex, the Wonder Horse, vows vengeance on his master's murderer--Jud Regan, leader of a band of smugglers and foreman at a ranch owned by Mary Martin. Assigned to capture a group of smugglers, Sgt. Jack Gordon meets Mary and discovers that Regan, who is also her guardian, is a crook. Rex helps Gordon capture Regan and brings a troop of Mounties to aid Gordon when he gets into trouble.