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THE SIMPSONS · SEASON 22 · EPISODE 4

The Simpsons S22E04 Treehouse of Horror XXI

★ 8.6 · ESSENTIAL Nov 7, 2010 30 MIN FOX
Still from The Simpsons S22E04: Treehouse of Horror XXI

The episode in brief

Beware of ouija boards, vampires and unexpected guests in the 21st annual installment of the "Treehouse of Horror." In "War and Pieces," the first of three spine-tingling tales, Marge, worried about the effects of excessively violent video games, encourages Bart and Milhouse to give wholesome, classic board games a shot. The best friends discover that board games aren't boring after all when they find themselves playing a real-life game in which they must beat all the challenges before they are allowed to return to home. The supernatural spells continue in "Tweenlight," when Lisa becomes smitten with a mysterious new student, Edmund, who also happens to be a vampire. When a romance blossoms, the young lovers run away to Dracula-la Land, leaving Homer to come to Lisa's rescue. In the final frightening fable, "Master and Cadaver," Homer and Marge set sail on a romantic second honeymoon, but are interrupted when they rescue Roger, a castaway who escaped an attempted poisoning on his ship. Convinced that Roger is sabotaging their getaway and plotting a murder of his own, Homer and Marge take matters into their own hands.

FAN DESK VERDICT An all-timer. This is the episode you show someone to explain why The Simpsons matters — clear the evening and watch it properly.

Who’s in it

SERIES REGULARS

Where it sits in the season

TAP A BAR TO JUMP

Where to watch S22E04

US · NOVEMBER 2026
AVAILABILITY IS FOR THE SHOW; NOT EVERY SERVICE CARRIES EVERY EPISODE · LINKS MAY EARN US POPCORN MONEY
8.6
THE FAN VERDICT
Canon. Required viewing for the fan card.

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S22E04 FAQ

When did The Simpsons S22E04 air?

The Simpsons S22E04 (“Treehouse of Horror XXI”) first aired on November 7, 2010.

Where can I watch The Simpsons S22E04?

In the US, The Simpsons season 22 — 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 S22E04 a good episode?

Fans rate The Simpsons S22E04 (“Treehouse of Horror XXI”) 8.6/10, which puts it in the essential tier for The Simpsons.