Hoppy goes undercover as a gambler from the East when Bar 20 cattle are stolen by unknown rustlers. Brennan/Talbot are twin brothers (one a casino owner, the other a rancher) and Hoppy believes they provide alibis for each other while one is out committing crimes. Hoppy gets a job in the casino to learn more but is exposed when a gambling gunslinger notices him.
William Boyd
as Hopalong Cassidy
Russell Hayden
as Lucky Jenkins
George 'Gabby' Hayes
as Windy Halliday
Ruth Rogers
as Barbara Hamilton
Stanley Ridges
as Earl Brennan / Dave Talbot
Frederick Burton
as Tom Hamilton
Jack Rockwell
as City Marshal
Roy Barcroft
as Henchman Ewing
Ed Cassidy
as Pierce
Wen Wright
as Lane
Buzz Barton
as Hamilton Ranch Cowhand
Hank Bell
as Deputy
