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.
William Boyd
as Hopalong Cassidy
James Ellison
as Johnny Nelson
George 'Gabby' Hayes
as Windy Halliday
Morris Ankrum
as Loco
John Beach
as Bailey
Nora Lane
as Grace Rand
Charlene Wyatt
as Molly Rand
Trevor Bardette
as Colonel Gonzales
Earle Hodgins
as Major Stafford
Al Bridge
as Dandy Morgan
George Chesebro
as Tom Parker
John St. Polis
as Doctor
