"Victims of Vengeance"
One really gets spoiled by the excellent fight choreography and stunts in Republic Serials. They are very energetic and yet maintain a certain rawness, like a real fight would actually be, if a person could take that many fists to the face at once. Many movies of the time seemed to let their stuntmen flail at each other, hoping for a decent fight scene, which rarely happened.
I always find it funny that the villains never repeat a plan. Half the time the plan almost succeeds, and it's pure luck that the hero foils it. I'd try at least once more to see if it would work.