THE SIMPSONS
Fox, 8:00 p.m. ET
Horror of horrors! It’s “Treehouse of Horror XXXI,” which means The Simpsons is back, for the 31st time since 1990, to present a trilogy of outlandish and usually spooky tales that break all the show’s usual conventions. It’s all in good Halloween fun, so anything can happen – as in this new installment, when Marge wears not a Halloween mask, but a COVID one…