Disguising himself as a milquetoast Easterner who writes Western novels, Hoppy enrolls in a dude ranch in order to unmask the murderer of the owner's husband.
William Boyd
as Hopalong Cassidy
George 'Gabby' Hayes
as Windy Halliday
Russell Hayden
as Lucky Jenkins
Charlotte Wynters
as Ann Marsh
Jan Clayton
as Dorrie Marsh
Robert Fiske
as Monte Keller
Kenneth Harlan
as John Marsh
Anthony Nace
as Steve Dorman
Kathryn Sheldon
as Abigail Snodgrass
Maurice Cass
as E. Prescott Furbush
Alphonse Ethier
as Superintendent
Glenn Strange
as Bouncer
