← Season 31
THE SIMPSONS · SEASON 31 · EPISODE 4

The Simpsons S31E04 Treehouse of Horror XXX

★ 7.2 · GREAT Oct 20, 2019 30 MIN FOX
Still from The Simpsons S31E04: Treehouse of Horror XXX

The episode in brief

The 30th Treehouse of Horror features a demon Maggie, a mission to rescue Milhouse from another dimension, dead-Homer's spirit trying on some new bodies for size and Selma finally finding love in an unlikely place – the alien in the basement.

FAN DESK VERDICT A top-shelf entry. Not quite canon, but you’ll be quoting it all week — the fan desk says don’t skip.

Who’s in it

SERIES REGULARS

Where it sits in the season

TAP A BAR TO JUMP

Where to watch S31E04

US · NOVEMBER 2026
AVAILABILITY IS FOR THE SHOW; NOT EVERY SERVICE CARRIES EVERY EPISODE · LINKS MAY EARN US POPCORN MONEY
7.2
THE FAN VERDICT
Keeper. Goes straight in the rewatch rotation.

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S31E04 FAQ

When did The Simpsons S31E04 air?

The Simpsons S31E04 (“Treehouse of Horror XXX”) first aired on October 20, 2019.

Where can I watch The Simpsons S31E04?

In the US, The Simpsons season 31 — including this episode — is available on FX, Hulu, Disney+, fuboTV, DirecTV On Demand, Spectrum On Demand, YouTube TV, FOX One Amazon Channel, Hulu on Disney+, Amazon, Fandango at Home, and AppleTV.

Is The Simpsons S31E04 a good episode?

Fans rate The Simpsons S31E04 (“Treehouse of Horror XXX”) 7.2/10, which puts it in the great tier for The Simpsons.