The Simpsons

FOX | 9:00 pm

It may have missed the Halloween deadline, but the new "Treehouse of Horror XXXI" marks the 31st edition of this seasonal favorite. As usual, the format is a terror-themed trilogy, this year encompassing a frightening look at the 2020 election, parodies of Pixar and "Spider-Man: Into the Spider-Verse," and a ninth birthday that Lisa (voice of Yeardley Smith) just can't get over. Dan Castellaneta, Julie Kavner and Nancy Cartwright also star in the voice cast.