S11E04The Simpsons season 11 episode 4: Treehouse of Horror X
Aired 31 October 199923 minRated TV-PG
Where to watch The Simpsons Season 11 in Australia
The Simpsons season 11 is streaming in Australia on Disney+ (subscription, listed for the whole show). You can also buy it on Apple TV from $3.49.
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Availability checked 16 November 2026.
What happens in “Treehouse of Horror X”
In "I Know What You Diddily-Iddly-Did" the Simpsons fear they have killed Ned Flanders. "Desperately Xeeking Xena" satirizes superheroes of yore with "Stretch Dude" Bart and "Clobber Girl" Lisa. And "Life's A Glitch, Then You Die" depicts the upcoming horror of Y2K.
Episode summary: TMDB.
Before you watch
- It is episode 4 of 22 of season 11, so watch episodes 1 to 3 first.
- It runs about 23 minutes.
- Directed by Pete Michels, written by Ron Hauge, Donick Cary and Tim Long.
- TMDB users rate it 7.3 out of 10 (37 votes).
The Simpsons trailer
The official trailer for the series (no preview of this episode has been published).
Play video: The Simpsons trailer
Cast and crew of this episode
- Director
- Pete Michels
- Writers
- Ron HaugeDonick CaryTim Long
- Guest stars
- Tom Arnold as Tom Arnold (voice)Dick Clark as Dick Clark (voice)Lucy Lawless as Lucy Lawless (voice)Marcia Mitzman Gaven as Maude Flanders (voice)
Credits: TMDB.
More from The Simpsons Season 11
Previous · S11E03Guess Who's Coming to Criticize Dinner?24 October 1999
Next · S11E05E-I-E-I-(Annoyed Grunt)7 November 1999Every episode of Season 11The Simpsons episode guide
Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.