BUCK ROGERS (film serial)
BUCK ROGERS. Serial film. 12 episodes. USA: Filmcraft (tape) / Universal (S. F. Ency.), 1939. Ford Beebe and Saul A. Goodkind, dir. Larry (Buster) Crabbe, star. "Based on the newspaper feature entitled 'Buck Rogers' . . . ."
See for teleporters, an apparently underground "Hidden City," political rule (of sorts) by a scientist vs. a criminal regime under "the Leader," and the "ray filament" in "the amnesia helmet" that makes one into "a human robot"—a human automaton obedient to orders.