Where to Watch The Fighting Trooper (1934)

James Oliver Curwood's

When the Ranger Sergeant returns murdered with a note that LaFarge did it, Trooper Burke sets out to after LaFarge. Working undercover, he saves LaFarge's life and this gets him into LaFarge's gang. He then arrests LaFarge and brings him in only to learn that LaFarge is not only innocent but is now a prisoner of the real killer.