William Boyd

as Hopalong Cassidy

George 'Gabby' Hayes

as Windy Halliday

Evelyn Brent

as Lilli Marsh

Grant Richards

as Bob Claiborne

Morris Ankrum

as Blackie Felton

William Janney

as Buddy Cassidy

Gail Sheridan

as Mary Saunders

John Beck

as Bob Saunders, newspaper editor