Navajo Kid (1945)

When Joe Kirk the Indian Agent is murdered, His adopted son Tom Kirk heads out after the killer. Finding gambler Honest John with his father's ring, Tom arrests him. But Honest John found the ring on the floor when Crandall, the real killer, played in his card game. Crandall kills Honest John to keep him silent. But Tom now finds the clue that will lead him to the killer.