The Payoff presumably refers to this chapter being the finale of Superman. There’s not much payoff otherwise. Spider Lady Carol Forman isn’t out to blackmail the city, she’s out to cause destruction. She’s given the Daily Planet four hours until she destroys it.
She’s has to give them four hours because the machine isn’t ready yet.
The chapter opens with Superman Kirk Alyn saving Noel Neill and her being conscious long enough to thank him. He’s let at least two people die in order to save her. After he tells her to get back to work, he cartoon flies into the building and changes outfits.
The chapter reuses a lot of Superman flying, Kirk Alyn changing clothes footage. It reuses some of it at least twice because as Neill, Tommy Bond, and Pierre Watkin try to figure out the Spider Lady’s plan, Alyn is popping in and out as Superman or Clark Kent.
The showdown between Forman and Alyn is about as impressive as one would expect for Superman, meaning not impressive at all.
The chapter ends on an odd note–a weak, mean joke. Certainly not a payoff moment.
There is, however, the best thing in the serial in terms of character development in this chapter. Neill starts writing an article about experiencing her impending doom. It’s about the only sincere thing in the serial’s fifteen chapters.