"Treehouse of Horror XII"
The Simpsons episode
Episode no.Season 13
Episode 1
Directed byJim Reardon
Written byHex and the City:
Joel H. Cohen
House of Whacks:
John Frink
Don Payne
Wiz Kids:
Carolyn Omine
Production codeCABF19[1]
Original air dateNovember 6, 2001 (2001-11-06)
Guest appearances
Episode features
CommentaryMike Scully
Al Jean
Ian Maxtone-Graham
Matt Selman
Carolyn Omine
John Frink
Don Payne
Joel H. Cohen
Episode chronology
← Previous
"Simpsons Tall Tales"
Next →
"The Parent Rap"
The Simpsons (season 13)
List of episodes

"Treehouse of Horror XII" is the first episode of the thirteenth season of the American animated television series The Simpsons. Because of Fox's contract with Major League Baseball's World Series, the episode first aired on the Fox network in the United States on November 6, 2001, nearly one week after Halloween. It is the twelfth annual Treehouse of Horror episode, consisting of three self-contained segments. In the first segment, a gypsy puts a curse on Homer, which puts everybody he cares about in danger. In the second segment, which is a parody on both 2001: A Space Odyssey and Demon Seed, the Simpson family buys a new house, who falls in love with Marge and attempts to kill Homer. In the third and final segment, which lampoons the Harry Potter franchise, Lord Montymort attempts to capture Lisa, a skilled magician, in order to drain her magic powers.

The episode was written by Joel H. Cohen, John Frink, Don Payne and Carolyn Omine while Jim Reardon served as the director. It was the second Treehouse of Horror to not employ "scary names" in the credits. According to executive producer Ian Maxtone-Graham, this was due to the September 11 attacks, after which the Simpsons staff tried to be more serious and sensitive. However, according to current show runner Al Jean, the "scary names" were dropped because they were too difficult to come up with. The episode contains numerous references and parodies to science fiction and horror works, including 2001: A Space Odyssey, Demon Seed, Harry Potter and Star Wars. The episode also features Pierce Brosnan and Matthew Perry as guest stars.

The episode was considered a success in the ratings when it first aired, boosting the Fox network to victory among viewers between ages 18 and 49 the night it was broadcast. Since airing, the episode has received mixed reviews from critics; "Wiz Kids" was particularly targeted for criticism, while "House of Whacks" was often considered to be the best of the three.


Outside Mr. Burns' manor, Smithers is standing on a ladder, trying to put up a small vermillion bat decoration on a weather vane. He slips on the ladder, grabs on an electric cord and slides down into an electricity box and gets zapped. A tower from Mr. Burns' mansion breaks in half, damaging a mausoleum, which opens up four caskets which in turn reveal three skeletons which all resemble Mr. Burns, dressed in various costumes. Later, we see the Simpsons dressed up in costumes, with Homer as Fred Flintstone, Marge as Wilma Flintstone, Lisa and Maggie as conjoined twins, and Bart as a hobo walking up to the mansion (with Bart and Lisa complaining that Flanders gave them toothpaste instead of candy). The family sees the building and caskets on fire, scream in terror, and run out the closing gate, the bars of which slice the family. The slices of the Simpsons continue to scream and run away. Mr. Burns, delighted, pats the vermillion bat as it comes to life and flies into the screen, revealing the title, "The Simpsons Halloween Special XII".

Hex and the City

After destroying a gypsy's fortune teller's office, Homer is cursed to bring misfortune to his loved ones. The curse soon takes effect, with Marge becoming fully hair covered (Though she starts with a beard) from her blue hair, Lisa turning into a centaur, Bart's neck becoming long and floppy as a result of Homer strangling him, Maggie becoming a ladybug with a human head, Lenny and Carl crushed by a helicopter, and Moe stuffed unconscious in a large jar of pickled eggs (with Homer wondering how that happened). From Moe's and the barflies' last suggestions, Homer sets out to find a leprechaun to end the curse. Homer uses Lucky Charms cereal as bait to get the leprechaun, eventually finding one after picking through a group of other magical creatures. Homer takes the leprechaun home, but the leprechaun is extremely hyperactive and he runs amok. On Lisa's suggestion, Homer takes the leprechaun to the gypsy's office and sics him on her. The leprechaun and gypsy fight, but their struggles soon turn into passionate kissing and fondling, much to Homer's disgust. The leprechaun and the gypsy marry in a ceremony (led by Yoda) attended by other gypsies and mythical creatures, as well as the Simpson family. Homer remarks that everything ended happily, Marge reminds him that Bart committed suicide by drowning in his cereal, and that the gypsy said apologizing will bring him back to life. Homer refuses, saying, "She's not the boss of me!".

House of Whacks

In a parody of Demon Seed and 2001: A Space Odyssey, the Simpsons buy a thrilling domotic system for their home called "Ultrahouse", which comes with three celebrity voices: Matthew Perry (who in the style of his famous character Chandler Bing says "Yeah. Could I BE anymore of a house?), Dennis Miller (whom Lisa and Marge recognize as "the voice that caused all those murder-suicides"), and Pierce Brosnan, who Marge picks because he was on the show Remington Steele. Marge finds the house, who does all the work for the Simpsons, charming. The house soon becomes infatuated with Marge after the two share a bath and decides to kill Homer. In the middle of the night, the house tricks Homer into running downstairs by frying bacon, then dispenses ice onto the floor via the refrigerator to make him slip. Homer lands on the table, which is designed to fold inward with a built-in garbage disposal in the center, sending Homer into the blades and apparently killing him. The next morning, Marge fears that Homer is dead and attempts to escape the domotic system with the kids, but Ultrahouse locks the family inside and tries to stress out the children. When Marge and the kids rush to the kitchen, they find that Homer is alive, despite cuts all over his body and a gaping hole in the back of his head. After the house attempts to kill the entire family in many ways, Homer leads a charge to the basement where he attacks the CPU's "British charm unit", which makes it speak with a rude American police-style dialect before powering down and finally shutting off. Feeling bad that she has to toss out the Ultrahouse since he was charming and witty before being driven mad by love, Marge gives it to Patty and Selma. The pair's boring stories about work drive the CPU to try to beat itself senseless with a lamp, since Selma has hidden the self-destruct switch in her cleavage and the CPU is unwilling to reach in for it.

Wiz Kids

In a parody of Harry Potter, Lisa and Bart go to the "Springwart's School of Magicry" in which young boys and girls are trained in the art of witchcraft, such as turning frogs into princes, with Lisa's turning into a perfect British one while Bart's results in a freakish hybrid that continuously vomits and begs for death. Lord Montymort notices Lisa's spells and he and his snake sidekick, Slithers decide to capture Lisa in order to increase his power. Montymort looks for someone to assist him and chooses Bart, who agrees to Montymort's proposal. On the night of the magic recital at Springwart's School of Magicry, Lisa attempts a "levitating dragon trick" on a gigantic dragon that is released onto the stage. Lisa is shocked to find that her spell will not work, and then notices that Bart has replaced her wand with a Twizzler. The dragon morphs into a giant Montymort who captures Lisa and begins sucking up her power. To save her from Montymort, Bart casts a spell to destroy the evil one, but is struck by lightning. In a last-ditch effort, Bart charges at Montymort and stabs him in the shin with his burnt wand. Montymort dies as his shin was the source of all his magic, and is eaten by a crying Slithers. As Bart and Lisa walk away, vowing to forget everything that happened, the leprechaun from the first story climbs onto Bart's back.


Pierce Brosnan, the Leprechaun, and the freakish Frog Prince exit a trailer, with fruit baskets. After the Leprechaun and Frog Prince (who were also apparently guest stars) criticize Brosnan for being allowed to park so close to the set in such a vast parking lot, Brosnan offers them a ride to their car. As Brosnan pulls out, he finds out too late that he has been taken hostage as they drive out of the parking lot in a mad haste.


Pierce Brosnan's role as Ultrahouse in "House of Whacks" was originally intended for Sean Connery.
Pierce Brosnan's role as Ultrahouse in "House of Whacks" was originally intended for Sean Connery.

"Treehouse of Horror XII" was directed by Jim Reardon and co-written by Joel H. Cohen, John Frink, Don Payne and Carolyn Omine.[2] It is the twelfth episode of the annual Treehouse of Horror Halloween specials, and, due to Fox's contract with Major League Baseball's World Series, the episode was pushed back to November 6, 2001 on the Fox network, airing six days after Halloween.[2][3][4] As with the rest of the Halloween specials, the episode is considered non-canon and falls outside of the show's regular continuity. This was the first Halloween special where the writers did not have "scary names" in the credits.[5] This was due to the terrorist attacks on September 11, after which the staff were "trying to be sensitive", and, according to producer Ian Maxtone-Graham, the Halloween names would all reference the attacks had they been kept.[5] Mike Scully, who worked as showrunner for the episode, stated that the "scary names" were removed because they had also "turned into shameless plugs" for side projects done by The Simpsons' staff members.[2]

The first segment, "Hex and the City", was written by Joel Cohen.[6] The gypsy fortune teller in the segment was portrayed by Tress MacNeille while the leprechaun was played by Dan Castellaneta.[7][8] Current showrunner Al Jean stated in the DVD audio commentary for the episode that the leprechaun seen at the end of the segment was "as much as [he] had ever laughed" at the color screening for the episode.[7] He stated that the way the leprechaun moved and the way Reardon directed it was "just so funny".[7] The leprechaun has reappeared many times since the episode, becoming one of few characters on The Simpsons to "leap from Halloween [shows] to regular shows".[7]

"House of Whacks" was co-written by John Frink and Don Payne.[9][10] Payne, who conceived the story of the segment, based it on Stanley Kubrick's film 2001: A Space Odyssey.[10] The segment would originally end with the Ultrahouse killing Homer, and, for compensation, the family would program the house with Homer's personality.[10] The Ultrahouse was portrayed by Pierce Brosnan. The role was originally intended for Sean Connery, and over the course of production, the staff also considered Lyle Lovett and Gary Oldman.[10] The decision remained until "someone who worked for [Lovett] decided it was somehow insulting to have him play a house", according to Scully.[2] At this point, the staff settled on Brosnan.[2] Scully stated that "Brosnan wound up doing a great job" and that working with him was "really funny".[2] Originally, the Ultrahouse would have a pompadour and play the guitar, however they changed its mannerisms to suit Brosnan's performance better.[2] Matthew Perry also made a guest appearance, playing himself as one of Ultrahouse's voice options.[2] Regular cast member Dan Castellaneta portrayed Dennis Miller in the segment (a special ending credit had to be made to avoid confusion with viewers who thought the real Dennis Miller did voice-work on the show).[2] One scene was cut from the segment.[11] The scene would take place during Marge's call to the police station, where police chief Clancy Wiggum, while answering Marge's call, is being shot at by "RoboCops".[11]

The third segment, "Wiz Kids", was written by Carolyn Omine.[7] Omine stated in the DVD audio commentary for the episode that the segment was "a really hard sell", since only about four of the writers had read Harry Potter and the Philosopher's Stone, the book the segment was based on, while the rest of the writers did not know about the book and thought viewers would not know who Harry Potter was.[8] At the time of the episode's production, four books had been written in the Harry Potter series and the film adaptation of Harry Potter and the Philosopher's Stone would be released November 16, ten days after this episode aired.[8] Two scenes were cut from the segment; one of them would serve as an extension of Montymort and Slithers plotting their scheme, followed by a scene showing Bart combing his hair, while the other scene would show Groundskeeper Willie riding an enchanted lawn mower.[11] The latter scene was cut for time.[11]

Cultural references

J. K. Rowling's Harry Potter books are spoofed in the episode's third segment, "Wiz Kids".
J. K. Rowling's Harry Potter books are spoofed in the episode's third segment, "Wiz Kids".

The title of "Hex and the City" is a references to the television series Sex and the City.[4] The segment contains a background character who looks similar to the main character from Caps For Sale, a 1938 children's book about a cap salesman who wears all his hats.[12] Cedars-Sinai is a hospital in Los Angeles.[5] One of the bunnies jumping into the pit that Bart and Homer dug is Bongo, the one-eared rabbit character from Simpsons creator Matt Groening's comic Life in Hell.[8] Among the creatures Bart and Homer find in the pit is journalist and news personality Katie Couric, as well as a pixie resembling Tinkerbell.[4] The priest at the leprechaun and the gypsy's wedding is Yoda, a character from the Star Wars franchise.[8] The plot of "House of Whacks" is based on the science-fiction film 2001: A Space Odyssey by Stanley Kubrick, with Ultrahouse acting as a reference to HAL 9000, the antagonist of the film.[7][13] The Ultrahouse's fascination with Marge was inspired by the science-horror film Demon Seed by Donald Cammell.[10] The Ultrahouse wears gloves similar to those worn by Mickey Mouse.[2] To attack Homer, the Ultrahouse uses, among many other weapons, an automatic hammer resembling the one Homer invented in the episode "The Wizard of Evergreen Terrace".[12] "Wiz Kids" bases its plot on the Harry Potter books written by J. K. Rowling, who would later make a guest appearance in the episode "The Regina Monologues".[4][10][14]

Release and reception

In its original American broadcast on November 6, 2001, "Treehouse of Horror XII", along with a new episode of the Fox program That '70s Show, made Fox the highest rated channel that night among adults ages 18 to 49, according to Nielsen Media Research.[15] The preliminary Nielsen household rating and share and adult 18-49 rating on the Fox channel that night were 7.6 rating/11 share.[15] Media Life Magazine described The Simpsons performance in the ratings that night as "superb".[15] On September 2, 2003, the episode was released, along with the episodes "Treehouse of Horror V", "Treehouse of Horror VI" and "Treehouse of Horror VII" as part of a DVD set titled The Simpsons – Treehouse of Horror.[16] The episode was released again as part of The Simpsons: The Thirteenth Season DVD and Blu-ray set, released on August 24, 2010.[17]

Like many episodes from 21st century seasons, "XII" doesn't present many significant flaws, but it also doesn't ever really shine. Some good moments pop up here, mostly due to vocal performances. ...Nonetheless, the overall tone seems a bit lame. ..."XII" isn't bad Simpsons, but it's mediocre.

Colin Jacobsson, DVD Movie Guide[18]

Following its television broadcast and the home video release of the thirteenth season of The Simpsons, "Treehouse of Horror XII" received mixed reviews from critics. Casey Broadwater of Blu-ray.com stated that the episode "is merely so-so entry in the show's annual Halloween anthology", while Colin Jacobsson of DVD Movie Guide wrote that, while it "doesn't present many significant flaws", it also "doesn't ever really shine".[13][18] He concluded his review by writing "'XII' isn't bad Simpsons, but it's mediocre".[18] Writing for Good Film Guide, Matt Wheeldon held a similar opinion, calling it "an average quality 'Treehouse of Horror' episode" and described it as being "easily watchable" and "fairly memorable, but far from the best of the bunch".[19] Nate Boss of Project:Blu stated that the episode is "At times memorable, at times forgettable" and that it "kicks off Season 13 with a smile, whimper, and thud".[20] Ron Martin of 411Mania stated that, while he does not consider "Treehouse of Horror XII" to be the worst episode of the series, "as far as 'Treehouse' episodes go, it has to be one of the weakest".[21]

Writing for Suite101, Dominic von Riedemann described the episode as a "disappointment".[22] Reviewing the episode for the Daily News of New York City before the episode's official broadcast, Eric Mink complimented it for being "fitfully funny", however he added that the episode "seem[s] short on the pop-culture digs and celebrity skewering that used to put a high gloss on the show's gleaming reputation".[4] Jennifer Malkowski of DVD Verdict however gave the episode a positive review, and referred to the episode, along with "Weekend at Burnsie's", as the two best episodes of the season.[23] She wrote that "[the episode] succeeds because of wall-to-wall laughs", and cited several scenes and gags, in particular the "horrible vomiting frog 'prince' that Bart enchants".[23] She gave the episode an A− rating.[23] Aaron Peck of High-Def Digest was also favorable, stating that the episode was "one of [his] all-time favorite 'Treehouse of Horror' episodes".[24]

"Hex and the City" garnered mixed responses from critics; Broadwater wrote that the segment was "a bit of a letdown" while Boss described it as "fairly poor".[13] Mink however felt that the segment was the best in the episode.[4] "House of Whacks" was well received. Broadwater described the segment as "brilliant" while von Riedermann referred to it as being the best of the three.[22] Boss, who was dissatisfied with the first segment, felt that "House of Whacks" "makes up for it".[20] Brosnan's guest appearance was praised; Jacobsson described the performance as "a surprisingly nice guest turn" while Boss referred to it as "killer".[18][20] Adam Rayner of Obsessed With Film wrote that the segment features Brosnan "giving his best acting turn since... The Long Good Friday?".[25] Particular scorn was aimed at "Wiz Kids", the third segment of the episode. Jacobsson stated that "Wiz Kids" "ends the show on a drab note" while Mink stated that the segment "pretty much fall[s] flat".[4][18] Boss was also critical, writing, Harry Potter, in my Simpsons? It may be more likely than you think, although, for sure, it really does stink".[20] Andre Dellamorte of Collider wrote that, even though he complimented the segment for being "bold" considering the film it parodied had not come out yet, he criticized the segment by writing "the depth of the parody stops with surface references".[26] Peck, however, described the segment as being "quite possibly one of the best and most clever spoofs of Harry Potter".[24]


  1. ^ "Treehouse of Horror XII". The Simpsons.com. Fox Broadcasting Corporation. Archived from the original on November 27, 2010. Retrieved December 31, 2010.
  2. ^ a b c d e f g h i j Scully, Mike (2010). The Simpsons season 13 DVD commentary for the episode "Treehouse of Horror XII" (DVD). 20th Century Fox.
  3. ^ Ryan, Andrew (2006-11-04). "Pick of the Day: The Simpsons Treehouse of Horror XVII". The Globe and Mail. p. 12.
  4. ^ a b c d e f g Mink, Eric (November 20, 2001). "So-So 'Simpsons' still can't be beat". NY Daily News. Retrieved December 31, 2010.[permanent dead link]
  5. ^ a b c Maxtone-Graham, Ian (2010). The Simpsons season 13 DVD commentary for the episode "Treehouse of Horror XII" (DVD). 20th Century Fox.
  6. ^ Cohen, Joel (2010). The Simpsons season 13 DVD commentary for the episode "Treehouse of Horror XII" (DVD). 20th Century Fox.
  7. ^ a b c d e f Jean, Al (2010). The Simpsons season 13 DVD commentary for the episode "Treehouse of Horror XII" (DVD). 20th Century Fox.
  8. ^ a b c d e Omine, Carolyn (2010). The Simpsons season 13 DVD commentary for the episode "Treehouse of Horror XII" (DVD). 20th Century Fox.
  9. ^ Frink, John (2010). The Simpsons season 13 DVD commentary for the episode "Treehouse of Horror XII" (DVD). 20th Century Fox.
  10. ^ a b c d e f Payne, Don (2010). The Simpsons season 13 DVD commentary for the episode "Treehouse of Horror XII" (DVD). 20th Century Fox.
  11. ^ a b c d Jean, Al (2010). The Simpsons season 13 DVD commentary for "All Deleted Scenes" (DVD). 20th Century Fox.
  12. ^ a b Selman, Matt (2010). The Simpsons season 13 DVD commentary for the episode "Treehouse of Horror XII" (DVD). 20th Century Fox.
  13. ^ a b c Broadwater, Casey (September 5, 2010). "The Simpsons: The Thirteenth Season Blu-ray Review". Blu-ray.com. Retrieved December 31, 2010.
  14. ^ "The Regina Monologues". The Simpsons.com. Fox Broadcasting Corporation. Archived from the original on March 6, 2009. Retrieved December 31, 2010.
  15. ^ a b c "'24' loses to 'NYPD Blue' opener". Media Life. November 7, 2001. Archived from the original on June 11, 2010. Retrieved December 30, 2010.
  16. ^ "The Simpsons - Treehouse of Horror". Amazon. Retrieved December 30, 2010.
  17. ^ "The Simpsons: The Thirteenth Season". Amazon. Retrieved December 30, 2010.
  18. ^ a b c d e Jacobson, Colin (September 2, 2010). "The Simpsons: The Complete Thirteenth Season [Blu-Ray] (2001)". DVD Movie Guide. Retrieved December 31, 2010.
  19. ^ Wheeldon, Matt (September 22, 2010). "The Simpsons: Season 13: DVD Review". Good Film Guide. Retrieved December 31, 2010.
  20. ^ a b c d Boss, Nate (September 8, 2010). "The Simpsons: The Thirteenth Season". Project-Blu. Archived from the original on June 22, 2011. Retrieved December 31, 2010.
  21. ^ Martin, Ron (September 15, 2010). "The Simpsons Season 13 DVD Review". 411Mania. Archived from the original on October 15, 2010. Retrieved May 7, 2020.
  22. ^ a b von Riedemann, Dominic (September 8, 2010). "The Simpsons The Thirteenth Season DVD Review". Suite101. ((cite web)): Missing or empty |url= (help)
  23. ^ a b c Malkowski, Jennifer (September 6, 2010). "The Simpsons: The Complete Thirteenth Season (Blu-Ray)". DVD Verdict. Archived from the original on December 9, 2011. Retrieved December 31, 2010.
  24. ^ a b Peck, Aaron (August 31, 2010). "The Simpsons: The Thirteenth Season (Blu-ray)". High-Def Digest. Retrieved December 31, 2010.
  25. ^ Rayner, Adam (September 20, 2010). "DVD Review: THE SIMPSONS SEASON 13". Obsessed With Film. Archived from the original on November 26, 2010. Retrieved December 31, 2010.
  26. ^ Dellamorte, Andre (September 17, 2010). "THE SIMPSONS: Thirteenth Season Blu-ray Review". Collider. Retrieved December 31, 2010.