Ridin' Thru (1934)

BLAZING TRAILS TO ADVENTURE AND GLORY!

Dad Brooks is in financial trouble and needs to sell a lot of horses. But they are being rustled and needing help, he sends for Tom. Tom looks for the rustlers but eventually realizes that someone is using a wild horse to do the rustling. He finds the secret entrance used by the rustlers to hide the horses but soon finds himself a prisoner.