Mystery Man (1944)

After Hoppy helps round up the Trilling gang, Trilling breaks his men out of jail and they rustle the Bar 20 herd for revenge. When Hoppy gets the herd back, Trilling posing as a Marshal not only gets the herd again, he gets the Sheriff to jail the Bar 20 gang. Getting help from the Sheriff's daughter, Hoppy and pals start out once more after Trilling.