The son of an Army friend is about the join an outlaw gang. Hoppy prevents this and brings the gang to justice.

William Boyd
as Hopalong Cassidy

Andy Clyde
as California Carlson

Rand Brooks
as Lucky Jenkins

Robert Emmett Keane
as Professor Dixon

Jane Randolph
as Jessie Dixon

Fred 'Snowflake' Toones
as Speed

Steve Barclay
as Bruce Landy

Harry Cording
as Duke

Earle Hodgins
as Sandler

Robert Bentley
as Barton