There's always something happening with the Bar-20 gang. For instance, there's the matter of the ghost of San Miguel Canyon who everyone agrees is the ghost of Carlos Martinez who was murdered long ago. But why does he show himself only on Friday nights -- and only to a Mexican? Hopalong Cassidy suspects there's a devious and practical reason. Then there's the day Hopalong rides into Rawhide and learns about its self-appointed ruler who is thought of as an affliction just waiting to be rubbed out. But anyone who objects to him is soon found dead.