Where to Watch Borderland (1937)

WILLIAM BOYD, the daring "Hopalong Cassidy" plays a lone game against the law!

Hoppy goes undercover as an outlaw (which permits him, for once, to drink and be mean to children) to track down a bunch of outlaws operating along the border. Loco, the head bad guy, deflects suspicion from himself by pretending to be a moron.