U.S. Marshal Hopalong Cassidy is called when a town becomes overun with bad guys. Disguised as a member of a medicine show, Hoppy discovers that the ringleader is none other than sweet li'l ol' Ma Burton.

• Paramount Pictures
• Harry Sherman Productions
• William Boyd
• Russell Hayden
• Marjorie Rambeau
• Bernadene Hayes
• Earle Hodgins
• Britt Wood
• Kenneth Harlan
• William Pagan