Sunset Trail 1939

Synopsis:

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.

Directed by: Lesley Selander
Written by: Norman Houston
Runtime: 69 minutes
Tagline: CASSIDY PLAYS AN UNDERCOVER GAME!
Related titles:
Cast:
William Boyd
William Boyd
Hopalong Cassidy 
George 'Gabby' Hayes
George 'Gabby' Hayes
Windy Halliday 
Russell Hayden
Russell Hayden
Lucky Jenkins 
Charlotte Wynters
Charlotte Wynters
Ann Marsh 
Jan Clayton
Jan Clayton
Dorrie Marsh 
Robert Fiske
Robert Fiske
Monte Keller