Lost Ranch (movie, 1937)

Cattlemen's Protective Association agent Tom Wade and his partner Happy are assigned to look into the disappearance of rancher John Carroll, who has been abducted by Carson, who wants to use his out-of-the-way ranch as a base for his smuggling operations. Complications arise as Carrol's daughter, Rita, looking for him, has an unfriendly run-in with Wade, then later is herself kidnapped by Carson.