[s30e4] Treehouse Of Horror Xxix Apr 2026

The opening sequence is heavily inspired by The Shadow Over Innsmouth , featuring Cthulhu.

A parody of the movie Split . Lisa develops multiple personalities (including a wealthy socialite and a street-smart kid) after a bad reaction to a chemistry experiment. She kidnaps Bart, Nelson, and Milhouse, trapping them in a cell. The segment ends with a twist involving the "placement" of brands and a meta-commentary on the episode's own production. "Geriatric Park"

Cthulhu appears in the intro, having a "contest" with Homer. [S30E4] Treehouse of Horror XXIX

A parody of Jurassic Park . Mr. Burns opens a retirement home on a private island where the elderly are injected with dinosaur DNA to rejuvenate them. Everything goes well until Homer raises the temperature on the thermostat, causing the seniors to transform into giant, rampaging "Grampa-saurs." Key Cultural References

A parody of Invasion of the Body Snatchers . Plant-like aliens from the planet Mapple (an Apple Inc. parody) arrive on Earth via a new "M-Phone" launch. They replace Springfield’s citizens with vegetable clones who lack human emotions—which, ironically, makes the town much more peaceful until the "clones" discover the original humans' secret stash of discarded technology. "Multi-Placements" The opening sequence is heavily inspired by The

The third segment mirrors the plot beats of the franchise, including the iconic gates and the "chaos theory" warnings. Quick Stats Director: Matthew Faughnan Writer: Joel H. Cohen

Homer mentions the sci-fi series during the first segment. She kidnaps Bart, Nelson, and Milhouse, trapping them

"Treehouse of Horror XXIX" is the fourth episode of and the 643rd episode overall. It originally aired on October 21, 2018. Episode Summary