''Treehouse of Horror'' is a series of annual
Halloween
Halloween, or Hallowe'en (less commonly known as Allhalloween, All Hallows' Eve, or All Saints' Eve), is a celebration geography of Halloween, observed in many countries on 31 October, the eve of the Western Christianity, Western Christian f ...
-themed
anthology
In book publishing, an anthology is a collection of literary works chosen by the compiler; it may be a collection of plays, poems, short stories, songs, or related fiction/non-fiction excerpts by different authors. There are also thematic and g ...
episodes of the American
animated sitcom
An animated sitcom is a subgenre of a television sitcom that is animation, animated instead of being filmed live-action, and is generally made or created for adult animation, adult audiences in most cases. ''The Simpsons'', ''SpongeBob SquarePan ...
and spin-off of ''
The Simpsons
''The Simpsons'' is an American animated sitcom created by Matt Groening and developed by Groening, James L. Brooks and Sam Simon for the Fox Broadcasting Company. It is a Satire (film and television), satirical depiction of American life ...
''. Also known as ''The Simpsons Halloween Specials'', each episode typically consists of three separate, self-contained segments. Each segment involves the
Simpson family in some comical
horror,
science fiction
Science fiction (often shortened to sci-fi or abbreviated SF) is a genre of speculative fiction that deals with imaginative and futuristic concepts. These concepts may include information technology and robotics, biological manipulations, space ...
, or
supernatural
Supernatural phenomena or entities are those beyond the Scientific law, laws of nature. The term is derived from Medieval Latin , from Latin 'above, beyond, outside of' + 'nature'. Although the corollary term "nature" has had multiple meanin ...
setting; plot elements operate beyond the show's normal
continuity, with segments exaggeratedly more morbid and violent than a typical ''Simpsons'' episode. With 35 episodes as of 2024, each ''Treehouse of Horror'' episode is numbered in
Roman numerals
Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers are written with combinations of letters from the Latin alphabet, eac ...
, one less than the respective season it is in.
The eponymous first installment "
Treehouse of Horror
''Treehouse of Horror'' is a series of annual Halloween-themed anthology episodes of the American animated sitcom and spin-off of ''The Simpsons''. Also known as ''The Simpsons Halloween Specials'', each episode typically consists of three se ...
" aired on October 25, 1990, during
the second season, broadly inspired by
EC Comics
E.C. Publications, Inc., (doing business as EC Comics) is an American comic book publisher. It specialized in horror fiction, crime fiction, satire, military fiction, dark fantasy, and science fiction from the 1940s through the mid-1950s, nota ...
horror tales. In addition to
parodies
A parody is a creative work designed to imitate, comment on, and/or mock its subject by means of satirical or ironic imitation. Often its subject is an original work or some aspect of it (theme/content, author, style, etc), but a parody can als ...
of horror, science fiction, and
fantasy
Fantasy is a genre of speculative fiction that involves supernatural or Magic (supernatural), magical elements, often including Fictional universe, imaginary places and Legendary creature, creatures.
The genre's roots lie in oral traditions, ...
films, episodes include the recurring alien characters
Kang and Kodos
Kang and Kodos Johnson are a duo of fictional recurring characters in the animated television series ''The Simpsons''. Kang is voiced by Harry Shearer and Kodos by Dan Castellaneta. They are green, perpetually drooling, octopus-like alien ...
, unique opening sequences, and 'scary' pseudonyms in the credits. ''Treehouse of Horror'' episodes have earned high ratings and broad popularity, spawning a steady stream of merchandise, including a
comic book series
a Media (communication), medium used to express ideas with images, often combined with text or other visual information. It typically the form of a sequence of Panel (comics), panels of images. Textual devices such as speech balloons, Glo ...
that ran from 1995 to 2017.
Segments
''Treehouse of Horror'' episodes typically consist of four parts: an opening and Halloween-themed version of the credits, followed by three segments.
These segments usually have a horror, science fiction or fantasy theme and quite often are parodies of films, novels, plays, television shows, ''
Twilight Zone'' episodes, or old issues of
EC Comics
E.C. Publications, Inc., (doing business as EC Comics) is an American comic book publisher. It specialized in horror fiction, crime fiction, satire, military fiction, dark fantasy, and science fiction from the 1940s through the mid-1950s, nota ...
. Although they are sometimes connected by "wraparounds", the three segments rarely have any kind of continuing connection within the episode. Some have recurring elements, such as "
Treehouse of Horror V", in which
Groundskeeper Willie
Dr. William MacDougal, better known as Groundskeeper Willie, is a recurring character on ''The Simpsons'', voiced by Dan Castellaneta. He is the head groundskeeper and Janitor at Springfield Elementary School. Willie is almost feral in nature and ...
is killed by an axe in all three segments.
The episodes are considered to be non-
canon
Canon or Canons may refer to:
Arts and entertainment
* Canon (fiction), the material accepted as officially written by an author or an ascribed author
* Literary canon, an accepted body of works considered as high culture
** Western canon, th ...
, which means they take place outside the normal continuity of the show.
The number of episodes of ''Treehouse of Horrors'' matches the number of series of the show: there are no such specials in
season 1, two in
season 34 and one in each other season.
From "
Treehouse of Horror
''Treehouse of Horror'' is a series of annual Halloween-themed anthology episodes of the American animated sitcom and spin-off of ''The Simpsons''. Also known as ''The Simpsons Halloween Specials'', each episode typically consists of three se ...
" to "
Treehouse of Horror XIII" and resuming with "
Treehouse of Horror XXXIII", all three segments were written by different writers. In some cases there was a fourth writer who wrote the opening and wraparound segments.
For the original "Treehouse of Horror", there were three different directors for the episode.
From
season 15's "
Treehouse of Horror XIV" to
season 33's "
Treehouse of Horror XXXII", however, only one writer was credited with writing each ''Treehouse of Horror'' episode.
"
Treehouse of Horror XXXII" featured five segments.
One of the season 34 ''Treehouse of Horror'' specials, "
Not It", is distinguished by its uncharacteristic title and one full-length segment (divided in the two parts).
On occasion, the episodes will be used to showcase special animation, such as the "
Treehouse of Horror VI" segment "Homer
3", in which a computer-animated Homer is shown in a non-animated setting. At the time (1995), it was unusual for a television show to use such animation. The segment was executive producer
Bill Oakley's idea and included live-action directed by
David Mirkin.
"
Treehouse of Horror XX" included the segment "There's No Business Like Moe Business", which was the first to be musically themed.
Traditions
Opening sequence
The first, second, and fifth ''Treehouse of Horror'' episodes open with
Marge
Marge is a feminine given name, a shortened form of Marjorie, Margot or Margaret. Notable Marges include:
People
* Marge (cartoonist) (1904–1993), pen name of Marjorie Henderson Buell, American cartoonist
* Marge Anderson (1932–2013), Ojibwe ...
standing on a stage and warning parents about the content of the episode, advising them to put their children to bed. The warning in the first episode was put in as a sincere effort to warn young viewers, as the producers felt it was somewhat scary.
The entire segment was a parody of
Edward Van Sloan
Edward Van Sloan (born Edward Paul Van Sloun; November 1, 1882 – March 6, 1964) was an American character actor best remembered for his roles in the Universal Studios horror films such as ''Dracula'' (1931), ''Frankenstein'' (1931), and '' Th ...
's pre-credits warning from the 1931 film ''
Frankenstein
''Frankenstein; or, The Modern Prometheus'' is an 1818 Gothic novel written by English author Mary Shelley. ''Frankenstein'' tells the story of Victor Frankenstein, a young scientist who creates a Sapience, sapient Frankenstein's monster, crea ...
''.
Marge's warnings quickly became a burden to write, particularly because – as she herself noted – they were mostly ignored, so after "
Treehouse of Horror V", they were dropped.
The segment returned in the season 31 episode "
Thanksgiving of Horror".
Other ''Treehouse of Horror'' episodes have opened with parodies; for example, "
Treehouse of Horror III" had Homer introduce the episode in a manner similar to
Alfred Hitchcock
Sir Alfred Joseph Hitchcock (13 August 1899 – 29 April 1980) was an English film director. He is widely regarded as one of the most influential figures in the history of cinema. In a career spanning six decades, he directed over 50 featu ...
in ''
Alfred Hitchcock Presents
''Alfred Hitchcock Presents'' is an American television anthology series created, hosted and produced by Alfred Hitchcock, airing on CBS and NBC, alternately, between 1955 and 1965. It features dramas, thrillers, and mysteries. Between 1962 ...
'',
"
Treehouse of Horror IV" had Bart introduce the episode and segments in a manner similar to ''
Night Gallery
''Night Gallery'' is an American anthology television series that aired on NBC from December 16, 1970, to May 27, 1973, featuring stories of horror and the macabre. Rod Serling, who had gained fame from an earlier series, '' The Twilight Zon ...
'', and "
Treehouse of Horror V" featured a parody of ''
The Outer Limits''.
The
sixth and
seventh episodes featured short clips with no lines because the episodes had run long, and longer segments were cut.
Following "Treehouse of Horror VII", the opening has been upwards of a minute long and sometimes featured an introduction by a character, such as
Mr. Burns in "
Treehouse of Horror XVII"
or included over-the-top violence, such as "
Treehouse of Horror VIII" (which showed a
Fox Network
Fox Broadcasting Company, LLC (commonly known as Fox; stylized in all caps) is an American commercial broadcast television network serving as the flagship property of Fox Corporation and operated through Fox Entertainment. Fox is based at Fo ...
censor being brutally murdered) and "
Treehouse of Horror XIV" (which showed the Simpson family killing each other).
In the opening segment of the first five episodes, the camera zooms through a cemetery where tombstones with humorous
epitaph
An epitaph (; ) is a short text honoring a deceased person. Strictly speaking, it refers to text that is inscribed on a tombstone or plaque, but it may also be used in a figurative sense. Some epitaphs are specified by the person themselves be ...
s can be seen. These messages include the names of canceled shows from the previous season, deceased celebrities such as
Walt Disney
Walter Elias Disney ( ; December 5, 1901December 15, 1966) was an American animator, film producer, voice actor, and entrepreneur. A pioneer of the Golden age of American animation, American animation industry, he introduced several develop ...
and
Jim Morrison
James Douglas Morrison (December 8, 1943 – July 3, 1971) was an American singer, songwriter, and poet who was the lead vocalist and primary lyricist of the rock band the Doors. Due to his charismatic persona, poetic lyrics, distinctive vo ...
,
and a tombstone with an inscription that read "TV violence" that was riddled with bullets as the camera panned on it.
They were last used in "
Treehouse of Horror V", which included a solitary tombstone with the words "Amusing Tombstones" to signal this.
The tombstone gags were easy for the writers in the first episode, but like Marge's warnings, they eventually got more difficult to write, so they were abandoned.
Another reason they were dropped was that the tombstones would list television shows that had been canceled the previous season; after a few years, several of the shows that were canceled were produced by former ''Simpsons'' writers.
However, after two decades, this gag made a brief comeback in "
Treehouse of Horror XXIX" at the very beginning, this time appearing before the main opening sequence and title.
While the early ''Treehouse of Horror'' episodes featured a Halloween themed opening sequence, the later ones only included the title and the "created by" and "developed by" credits. Every episode between "
Treehouse of Horror III" and "
Treehouse of Horror X" featured a
couch gag with a Halloween theme, including the Simpson family dressed as skeletons,
zombies,
and characters from previous Halloween episodes.
Wraparounds
The first four ''Treehouse of Horror'' episodes had brief
wraparounds that occurred before each segment and loosely tied together all three stories. "Treehouse of Horror" was the only one that actually included a treehouse as a setting.
In that episode, Bart and Lisa sat in it telling stories to each other.
"
Treehouse of Horror II" presented all of the segments as being nightmares of Lisa, Bart and Homer;
"
Treehouse of Horror III" had Lisa, Bart and
Grampa telling stories at a Halloween party;
and "
Treehouse of Horror IV" is presented by Bart in a parody of
Rod Serling's ''
Night Gallery
''Night Gallery'' is an American anthology television series that aired on NBC from December 16, 1970, to May 27, 1973, featuring stories of horror and the macabre. Rod Serling, who had gained fame from an earlier series, '' The Twilight Zon ...
''.
After a few years, the amount of broadcast time for an episode was shortened, allowing less time to tell a proper story.
There were no wraparounds for "Treehouse of Horror V" because they had been cut to make more time for the segments. Following that, the writers permanently dropped them
(until "
Treehouse of Horror Presents: Simpsons Wicked This Way Comes").
Kang and Kodos
Two characters that are virtually exclusive to the ''Treehouse of Horror'' series are
Kang and Kodos
Kang and Kodos Johnson are a duo of fictional recurring characters in the animated television series ''The Simpsons''. Kang is voiced by Harry Shearer and Kodos by Dan Castellaneta. They are green, perpetually drooling, octopus-like alien ...
, a pair of large green space aliens who were introduced in the "Hungry are the Damned" segment of "
Treehouse of Horror
''Treehouse of Horror'' is a series of annual Halloween-themed anthology episodes of the American animated sitcom and spin-off of ''The Simpsons''. Also known as ''The Simpsons Halloween Specials'', each episode typically consists of three se ...
". Kang and Kodos have since appeared in every ''Treehouse of Horror'' episode, often in
cameos. In some episodes, they only appear in the opening segment,
but often they will make a cameo appearance in the middle of a different story. For example, a story about zombies attacking the town briefly cuts to them in their space ship, watching the events and laughing maniacally at the Earthlings' suffering. The action then switches back to the actual story.
According to
Al Jean
Alfred Ernest Jean III (born January 9, 1961) is an American screenwriter and producer. Jean is well known for his work on ''The Simpsons''. He was raised near Detroit, Michigan, and graduated from Harvard University in 1981. Jean began his wri ...
in 2022, an unofficial rule is that they must be in every episode,
although quite often they will be forgotten and are added at the last moment, resulting in only a brief appearance.
Their scene in "
Treehouse of Horror VIII" nearly did not make the final cut of the episode, but
David X. Cohen managed to persuade the producers to leave the scene in.
Kang and Kodos were prominent characters in the 2015 episode "
The Man Who Came to Be Dinner", which was not Halloween themed.
Scary names
Beginning with "
Treehouse of Horror II", the producers decided to give the cast and crew of the show 'scary names' in the opening and closing credits. Although the names quickly became more silly than scary, there have been a wide variety of special credits, from simple names like "
Bat Groening" or "
Chains Hell Brooks" to complex ones like "
Dan CastellanetarghaGAHEGGA (Smash) Gurgle Mr. Hyde".
Sam Simon, who left the show during the
fourth season, still receives "developed by" and "executive producer" credits, and until "
Treehouse of Horror XXII", he had been listed in ''Treehouse of Horror'' episodes as "Sam 'Sayonara' Simon" and between "
Treehouse of Horror XXII" and "
Treehouse of Horror XXV" as "simonsam@
TWITterror". However, following his death in March 2015, he has simply been credited as "Sam Simon" starting from "
Treehouse of Horror XXVI".
The idea for 'scary names' came from executive producer
Al Jean
Alfred Ernest Jean III (born January 9, 1961) is an American screenwriter and producer. Jean is well known for his work on ''The Simpsons''. He was raised near Detroit, Michigan, and graduated from Harvard University in 1981. Jean began his wri ...
, who was inspired by
EC Comics
E.C. Publications, Inc., (doing business as EC Comics) is an American comic book publisher. It specialized in horror fiction, crime fiction, satire, military fiction, dark fantasy, and science fiction from the 1940s through the mid-1950s, nota ...
because some of the issues also used 'scary' alternate names.
The "scary names" became such a burden to write that they were cut for "Treehouse of Horror XII" and "Treehouse of Horror XIII", but after hearing complaints from the fans, Jean decided to bring them back.
Matt Groening's rule for the "scary names" is that they cannot be longer than a person's real name, but this is rarely followed by anyone else.
Cultural references
References to films, novels, plays, television shows, and other media are commonly featured, and many segments have been parodies of a specific work in the horror, science fiction, or fantasy genre. Many segments are spoofs of episodes of ''
The Twilight Zone
''The Twilight Zone'' is an American media franchise based on the anthology series, anthology television series created by Rod Serling in which characters find themselves dealing with often disturbing or unusual events, an experience described ...
'', and entire segments will be based on a single episode.
Some of the ''Twilight Zone'' episodes parodied include "
A Kind of a Stopwatch", "
To Serve Man",
"
A Small Talent for War",
"
Living Doll",
"
Nightmare at 20,000 Feet",
"
Little Girl Lost",
and "
The Little People".
The "Bart's Nightmare" segment of "
Treehouse of Horror II" parodies the episode "
It's a Good Life" and is even presented in a format similar to an episode of ''The Twilight Zone''.
Horror and thriller films parodied include ''
The Exorcist
''The Exorcist'' is a 1973 American supernatural horror film directed by William Friedkin from a screenplay by William Peter Blatty, based on The Exorcist (novel), his 1971 novel. The film stars Ellen Burstyn, Max von Sydow, Jason Miller (play ...
'', ''
The Amityville Horror
''The Amityville Horror'' is a book by American author Jay Anson, published in September 1977. It is also the basis of a series of films released from 1979 onward. The book is based on the claims of paranormal experiences by the Lutz family b ...
'',
''
King Kong
King Kong, also referred to simply as Kong, is a fictional giant monster resembling a gorilla, who has appeared in various media since 1933. The character has since become an international pop culture icon,Erb, Cynthia, 1998, ''Tracking Kin ...
'', ''
Night of the Living Dead
''Night of the Living Dead'' is a 1968 American Independent film, independent zombie horror film directed, photographed, and edited by George A. Romero, written by Romero and John A. Russo, John Russo, produced by Russell Streiner and Karl Har ...
'',
''
The Shining'',
''
A Nightmare on Elm Street
''A Nightmare on Elm Street'' is a 1984 American Supernatural horror film, supernatural slasher film written and directed by Wes Craven and produced by Robert Shaye. It is the first installment in the A Nightmare on Elm Street (franchise), ''A ...
'',
''
The Fly'',
''
Paranormal Activity
Paranormal events are purported phenomena described in popular culture, folk, and other non-scientific bodies of knowledge, whose existence within these contexts is described as being beyond the scope of normal scientific understanding. Not ...
'', and ''
Dead Calm''.
Robert Englund
Robert Barton Englund (born June 6, 1947) is an American actor and director. Englund is best known for playing the villain Freddy Krueger in the ''A Nightmare on Elm Street'' franchise. Englund has received multiple accolades and honors, incl ...
had a cameo appearance in "
Treehouse of Horror IX" as his character from ''
A Nightmare on Elm Street
''A Nightmare on Elm Street'' is a 1984 American Supernatural horror film, supernatural slasher film written and directed by Wes Craven and produced by Robert Shaye. It is the first installment in the A Nightmare on Elm Street (franchise), ''A ...
'',
Freddy Krueger
Freddy Krueger () is a fictional character and the antagonist of the ''A Nightmare on Elm Street'' horror film franchise. Created by Wes Craven, he made his debut in Craven's '' A Nightmare on Elm Street'' (1984) as the malevolent spirit of a ...
.
Science fiction films have also occasionally been used as inspiration for segments, and in later episodes, many of the segments were based more on science fiction than horror. Science fiction works parodied include ''
The Omega Man
''The Omega Man'' (stylized as ''The Ωmega Man'') is a 1971 American Apocalyptic and post-apocalyptic fiction, postapocalyptic action film directed by Boris Sagal and starring Charlton Heston as a survivor of a pandemic. It was written by John W ...
'',
the novel ''
Nineteen Eighty-Four
''Nineteen Eighty-Four'' (also published as ''1984'') is a dystopian novel and cautionary tale by the English writer George Orwell. It was published on 8 June 1949 by Secker & Warburg as Orwell's ninth and final completed book. Thematically ...
'',
''
E.T. the Extra-Terrestrial
''E.T. the Extra-Terrestrial'' (or simply ''E.T.'') is a 1982 American science fiction film, science fiction film produced and directed by Steven Spielberg and written by Melissa Mathison. It tells the story of Elliott Taylor, Elliott, a boy w ...
'',
''
The Island of Doctor Moreau
''The Island of Doctor Moreau'' is an 1896 science fiction novel by English author H. G. Wells. It was published on 1 January 1896. The novel is set between 1 February 1887 and 5 January 1888. The text of the novel is the narration of Edward Pr ...
'', and
Orson Welles
George Orson Welles (May 6, 1915 – October 10, 1985) was an American director, actor, writer, producer, and magician who is remembered for his innovative work in film, radio, and theatre. He is among the greatest and most influential film ...
's ''
The War of the Worlds
''The War of the Worlds'' is a science fiction novel by English author H. G. Wells. It was written between 1895 and 1897, and serialised in '' Pearson's Magazine'' in the UK and ''Cosmopolitan'' magazine in the US in 1897. The full novel was ...
'' radio broadcast.
In "Treehouse of Horror",
Edgar Allan Poe
Edgar Allan Poe (; January 19, 1809 – October 7, 1849) was an American writer, poet, editor, and literary critic who is best known for his poetry and short stories, particularly his tales involving mystery and the macabre. He is widely re ...
's poem "
The Raven
"The Raven" is a narrative poem by American writer Edgar Allan Poe. First published in January 1845, the poem is often noted for its musicality, stylized language and supernatural atmosphere. It tells of a distraught lover who is paid a visit ...
" is read by
James Earl Jones
James Earl Jones (January 17, 1931 – September 9, 2024) was an American actor. A pioneer for black actors in the entertainment industry, Jones is known for his extensive and acclaimed roles on stage and screen. Jones is one of the few perfor ...
, while the parts are acted by various characters.
Recent parodies have included films and television specials in more varied genres, including ''
Mr. & Mrs. Smith;''
It's the Great Pumpkin, Charlie Brown
''It's the Great Pumpkin, Charlie Brown'' is a 1966 American animated Halloween television special based on the comic strip ''Peanuts'' by Charles M. Schulz. The third ''Peanuts'' special, and the second holiday-themed special, to be created, i ...
; ''
Transformers
''Transformers'' is a media franchise produced by American toy company Hasbro and Japanese toy company Tomy, Takara Tomy. It primarily follows the heroic Autobots and the villainous Decepticons, two Extraterrestrials in fiction, alien robot fac ...
;''
''
Sweeney Todd
Sweeney Todd is a fictional character who first appeared as the villain of the penny dreadful serial '' The String of Pearls'' (1846–1847). The original tale became a feature of 19th-century melodrama and London legend. A barber from Fleet St ...
'', the
''Twilight'' film series; and ''
Jumanji
''Jumanji'' is a 1995 American fantasy adventure film directed by Joe Johnston from a screenplay by Jonathan Hensleigh, Greg Taylor, and Jim Strain, based on the 1981 children's picture book by Chris Van Allsburg. The film is the first ins ...
''.
Closing logos
A modified version of the
production logo
A production logo, studio logo, vanity card, vanity plate, or vanity logo is a logo used by Film studio, movie studios and television production company, production companies to brand what they produce and to determine the production company an ...
for
Gracie Films
Gracie Films is an American film and television production company founded by James L. Brooks on January 4, 1986. The company is primarily known for producing its long-running flagship animated series ''The Simpsons''.
The company's headquarter ...
is displayed after the closing credits. The shushing sound is replaced by either a scream or another sound effect from the episode, and the
jingle
A jingle is a short song or tune used in advertising and for other commercial uses. Jingles are a form of sound branding. A jingle contains one or more hooks and meanings that explicitly promote the product or service being advertised, usually ...
is played in a minor key on a pipe organ. The first three episodes did not feature the scream. "Treehouse of Horror VI" and "Treehouse of Horror XIX" did not feature the organ or scream; the former incorporated a ''
Myst
''Myst'' is a 1993 adventure video game developed by Cyan and published by Broderbund for Mac OS. In the game, the player travels via a special book to a mysterious island called Myst. The player interacts with objects and traverses the ...
'' homage and the latter used a piano rendition following its parody of ''
Peanuts
''Peanuts'' (briefly subtitled ''featuring Good ol' Charlie Brown'') is a print syndication, syndicated daily strip, daily and Sunday strip, Sunday American comic strip written and illustrated by Charles M. Schulz. The strip's original run ext ...
''. The music in "Treehouse of Horror VI" was reused in "
The Scorpion's Tale" without the Gracie Films jingle.
Production

The
first ''Treehouse of Horror'' installment aired on 1990 as part of
the second season, and its on-screen title was "The Simpsons Halloween Special." ("Treehouse of Horror XIII" was the first to feature "Treehouse of Horror" in the on-screen title.) It was inspired by
EC Comics
E.C. Publications, Inc., (doing business as EC Comics) is an American comic book publisher. It specialized in horror fiction, crime fiction, satire, military fiction, dark fantasy, and science fiction from the 1940s through the mid-1950s, nota ...
Horror tales.
Although every episode is entitled ''Treehouse of Horror'', the first was the only episode that actually used the treehouse motif.
During production of the first episode,
Matt Groening
Matthew Abram Groening ( ; born February 15, 1954) is an American cartoonist, writer, producer, and animator. He is best known as the creator of the television series ''The Simpsons'' (1989–present), ''Futurama'' (1999–2003, 2008–2013, 2 ...
was nervous about "The Raven" segment, and felt it would be "the worst, most pretentious thing
hey hadever done."
The ''Treehouse of Horror'' episodes are difficult for both the writers and the animators.
The episodes were originally written at the beginning of the production run, but in later seasons they were written at the end and aired at the beginning of the next season as holdovers, giving the animators more time to work.
Part of the difficulty for the animators is that the episodes always involve many complex backgrounds, new characters and new designs.
They are difficult for the writers because they must produce three stories, an opening and, in the early episodes, a wraparound. They would have to try to fit all of this into a 20–22 minute episode.
The episodes often go through many last minute changes, with rewrites requiring new lines to be recorded.
"Treehouse of Horror III" in particular underwent somewhere between 80 and 100 line changes in the six-week period between the arrival of the animation from Korea and the airing of the episode.
By the fourth season, executive producers
Al Jean
Alfred Ernest Jean III (born January 9, 1961) is an American screenwriter and producer. Jean is well known for his work on ''The Simpsons''. He was raised near Detroit, Michigan, and graduated from Harvard University in 1981. Jean began his wri ...
and
Mike Reiss
Michael L. Reiss ( '; born September 15, 1959) is an American television comedy writer. He served as a showrunner, writer, and producer for the animated series ''The Simpsons'' and co-created the animated series ''The Critic''. He created and ...
were less enamored of ''Treehouse of Horror'' episodes and considered dropping them, but the other writers insisted that they be kept.

Part of the attraction for the writers is that they are able to break the rules and include violence that would not make a regular episode.
In some cases, the writers will have an idea that is too violent and far-fetched or too short for a normal episode, but can be used as a segment in the seasonal special.
Several of the writers, former executive producer
David Mirkin among them, believe that the episodes should be scary and not just funny.
"Treehouse of Horror V" was described by Mirkin as being one of "the most intense, disturbing Halloween show ever" as it was filled with violence and gore in response to new censorship rules.
Early episodes seem mild compared to the carnage that followed in later episodes, according to Jean, who calls it "a societal thing". He points out that his 10-year-old daughter loves films like ''
Coraline
''Coraline'' () is a 2002 British dark fantasy horror children's novella by author Neil Gaiman. Gaiman started writing ''Coraline'' in 1990, and it was published in 2002 by Bloomsbury and HarperCollins. It was awarded the 2003 Hugo Award for ...
'', and that, "
nthe age of scary stories
..appropriateness has gotten lower."
Although gruesome for the most part, some segments, such as "Citizen Kang" in "
Treehouse of Horror VII", satirize political issues. The opening segment of "
Treehouse of Horror XIX" featured Homer attempting to vote for
Barack Obama
Barack Hussein Obama II (born August 4, 1961) is an American politician who was the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, he was the first African American president in American history. O ...
but a rigged electronic voting machine instead registers a vote for
John McCain
John Sidney McCain III (August 29, 1936 – August 25, 2018) was an American statesman and United States Navy, naval officer who represented the Arizona, state of Arizona in United States Congress, Congress for over 35 years, first as ...
. Rather than taking sides in the election, Jean says it is "mostly a comment on what many people believe to be the irregularities in our voting system". In "
Treehouse of Horror XVII", a segment called "The Day the Earth Looked Stupid" ends with Kang and Kodos taking over
Springfield as part of a mission called "Operation: Enduring Occupation". The script originally called for Kodos and Kang to look over the smoking ruins of Springfield and say: "This sure is a lot like Iraq will be." The Fox network did not have any objection to the line, but it was rejected by some of the writers as too obvious and was cut from the broadcast. While cut from the aired version, the line does appear in the "review" version sent to newspapers and magazines.

The first ''Treehouse of Horror'' episode marked the first time that an alternate version of the theme that airs over the end credits was used. Originally, it was intended to use a
theremin
The theremin (; originally known as the ætherphone, etherphone, thereminophone or termenvox/thereminvox) is an electronic musical instrument controlled without physical contact by the performer (who is known as a thereminist). It is named aft ...
, but one could not be found that could hit all the necessary notes.
The closing of "
Treehouse of Horror IV" features a version of the theme that is a combination of the instruments used in ''
The Munsters
''The Munsters'' is an American sitcom about the home life of a family of benign monsters that aired from 1964 to 1966 on CBS. The series stars Fred Gwynne as Herman Munster (Frankenstein's monster),Episodes referring to the fact that Herman is ...
'' theme song and the harpiscord and clicking from the ''
Addams Family'' theme song.
Usually when the producers submit an episode for the
Primetime Emmy Award
The Primetime Emmy Awards, or Primetime Emmys, are part of the extensive range of Emmy Awards for artistic and technical merit for the American television industry. Owned and operated by the Academy of Television Arts & Sciences (ATAS), the P ...
for "
Outstanding Individual Achievement in Music Composition for a Series (Dramatic Underscore)", they submit a ''Treehouse of Horror'' episode,
and to date, seven episodes have been nominated.
Üter Zörker is so far the only human character introduced in a ''Treehouse of Horror'' to make it into canon. His debut episode was "Treehouse of Horror IV" in the segment "Terror at Feet". He is an obese German exchange student obsessed with candy and was voiced by
Russi Taylor
Russi Taylor (May 4, 1944 – July 26, 2019) was an American voice actress. She was best remembered for voicing the character of Minnie Mouse in English from 1986 to 2019, and was married to voice actor Wayne Allwine, the voice of Mickey Mouse, ...
until her death.
2019's ''Treehouse of Horror'' was the
666th episode of the series. For the
34th season of ''
The Simpsons
''The Simpsons'' is an American animated sitcom created by Matt Groening and developed by Groening, James L. Brooks and Sam Simon for the Fox Broadcasting Company. It is a Satire (film and television), satirical depiction of American life ...
'', two ''Treehouse of Horror'' episodes were produced; the first episode was "
Not It", a parody of the 2017 supernatural horror film ''
It'' and its 2019 sequel ''
It Chapter Two
''It Chapter Two'' is a 2019 American supernatural horror film directed by Andy Muschietti from a screenplay by Gary Dauberman. It is the sequel to '' It'' (2017) and the second of a two-part adaptation of the 1986 novel '' It'' by Stephen Ki ...
''.
Scheduling
Although ''Treehouse of Horror'' episodes are Halloween-themed, for several years, they premiered in November due to
Fox
Foxes are small-to-medium-sized omnivorous mammals belonging to several genera of the family Canidae. They have a flattened skull; upright, triangular ears; a pointed, slightly upturned snout; and a long, bushy tail ("brush").
Twelve species ...
's coverage of
Major League Baseball
Major League Baseball (MLB) is a professional baseball league composed of 30 teams, divided equally between the National League (baseball), National League (NL) and the American League (AL), with 29 in the United States and 1 in Canada. MLB i ...
's
World Series
The World Series is the annual championship series of Major League Baseball (MLB). It has been contested since between the champion teams of the American League (AL) and the National League (NL). The winning team, determined through a best- ...
.
Season 12's "
Treehouse of Horror XI" was the first episode to air in November. There have been several references to this in the show, such as in
Season 15's "
Treehouse of Horror XIV" where Kang looks at a ''
TV Guide
TV Guide is an American digital media
In mass communication, digital media is any media (communication), communication media that operates in conjunction with various encoded machine-readable data formats. Digital content can be created, vi ...
'' and says, "Pathetic humans. They're showing a Halloween episode... in November!" and Kodos replies "Who's still thinking about Halloween? We've already got our Christmas decorations up!" The camera then cuts to a shot of the fireplace with Christmas decorations, and festive Christmas music plays over the opening credits.
Season 21's "
Treehouse of Horror XX" aired October 18, before the World Series, but the following year's episode,
Season 22's "
Treehouse of Horror XXI", aired on November 7.
Season 23's "
Treehouse of Horror XXII" aired on October 30 as the
2011 World Series
The 2011 World Series was the World Series, championship series of Major League Baseball's (MLB) 2011 Major League Baseball season, 2011 season. The 107th edition of the World Series, it was a best-of-seven playoff played between the American Le ...
(which went the maximum of seven games) had concluded on October 28.
Subsequent ''Treehouse of Horror'' episodes have premiered in October, although they have moved back to November on occasion. The
31st season included a
Thanksgiving
Thanksgiving is a national holiday celebrated on various dates in October and November in the United States, Canada, Saint Lucia, Liberia, and unofficially in countries like Brazil and Germany. It is also observed in the Australian territory ...
-themed spinoff, "
Thanksgiving of Horror". The
32nd season however pushed "
Treehouse of Horror XXXI" to November 1, 2020, because the
National League Championship Series
The National League Championship Series (NLCS) is a best-of-seven playoff and one of two League Championship Series comprising the penultimate round of Major League Baseball's (MLB) postseason. It is contested by the winners of the two Natio ...
went into Game 7, with the
World Series
The World Series is the annual championship series of Major League Baseball (MLB). It has been contested since between the champion teams of the American League (AL) and the National League (NL). The winning team, determined through a best- ...
that followed stretching to Game 6, resulting in Fox airing ''Treehouse'' after Halloween for the first time since 2010.
Citytv
Citytv (sometimes shortened to City, which was the network's official branding from 2012 to 2018) is a Television in Canada, Canadian television network owned by the Rogers Sports & Media subsidiary of Rogers Communications. The network consis ...
in Canada however aired the episode as originally scheduled. "
Treehouse of Horror XXXII" aired on October 10, 2021, to avoid airing in November due to the World Series overrun, and, with no
2022 World Series
The 2022 World Series was the World Series, championship series of Major League Baseball's (MLB) 2022 Major League Baseball season, 2022 season. The 118th edition of the World Series, it was a best-of-seven playoff between the American League (AL ...
game scheduled on a Sunday, "
Treehouse of Horror XXXIII" aired on October 30, 2022. "
Treehouse of Horror XXXIV," however, aired on November 5, 2023, and "
Treehouse of Horror XXXV" aired on November 3, 2024.
Merchandise
There has been a variety of merchandise based on the ''Treehouse of Horror'' episodes, including books, action figures,
comic books
A comic book, comic-magazine, or simply comic is a publication that consists of comics art in the form of sequential juxtaposed panel (comics), panels that represent individual scenes. Panels are often accompanied by descriptive prose and wri ...
,
video games
A video game or computer game is an electronic game that involves interaction with a user interface or input device (such as a joystick, game controller, controller, computer keyboard, keyboard, or motion sensing device) to generate visual fe ...
,
DVDs
The DVD (common abbreviation for digital video disc or digital versatile disc) is a digital optical disc data storage format. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The medium can store any kin ...
and a "Treehouse of Horror" version of
Hasbro
Hasbro, Inc. (; a syllabic abbreviation of its original name, Hassenfeld Brothers) is an American multinational corporation, multinational toy manufacturing and entertainment holding company founded on December 6, 1923 by Henry, Hillel and Herma ...
's board game
Monopoly
A monopoly (from Greek language, Greek and ) is a market in which one person or company is the only supplier of a particular good or service. A monopoly is characterized by a lack of economic Competition (economics), competition to produce ...
. Although every ''Treehouse of Horror'' episode until "
Treehouse of Horror XIX" has been released along with its season in a
boxset, in 2003, ''The Simpsons: Treehouse of Horror DVD'' was released. It includes ''Treehouse of Horror''s V, VI, VII and XII. A ''Treehouse of Horror'' comic book was published annually from 1995 to 2017, and collected into
several books, including ''The Simpsons Treehouse of Horror Fun-Filled Frightfest'', ''Bart Simpson's Treehouse of Horror Spine-Tingling Spooktacular'', ''Bart Simpson's Treehouse of Horror Heebie-Jeebie Hullabaloo'' and ''The Simpsons Treehouse of Horror Hoodoo Voodoo Brouhaha''.
Several
video games based on ''The Simpsons'' include levels with a Halloween theme, including ''
The Simpsons: Hit & Run'' and ''
The Simpsons Game''. In 2001,
Fox Interactive and
THQ released ''
The Simpsons: Night of the Living Treehouse of Horror'' on
Game Boy Color
The (GBC or CGB) is an 8-bit handheld game console developed by Nintendo. It was released in Japan on October 21, 1998, and to international markets that November. Compared to the original Game Boy, the Game Boy Color features a color TFT scre ...
. The entire game has a Halloween theme as the player tries to save the Simpson family from the Treehouse of Horror.
Many of the special character designs featured in the episodes have become action figures.
Four different playsets have been made by
Playmates Toys
Playmates Toys Limited is a Hong Kong toy company. The company was founded in Hong Kong in 1966 by Sam Chan Tai-ho as Playmates Industrial, manufacturing dolls for other companies. In 1975, Playmates began marketing its own line of preschool to ...
and released as
Toys "R" Us
Toys "R" Us is an American toy, clothing, and baby product retailer owned by Tru Kids (doing business as Tru Kids Brands) and various others. The company was founded in 1948 in Washington, D.C.; its first store was built in April 1948, with i ...
exclusives:
#The "Treehouse of Horror I" set was released in 2000 and included a cemetery playset as well as "Devil Flanders", "Bart the Fly", "Vampire Burns", and "King Homer". It also came with an "Evil Krusty Doll" and Gremlin as accessories.
#The "Treehouse of Horror 2" set was released in 2001 and included an interior alien spaceship playset as well as Kang, Kodos and "Alien Ship Homer". The entire set was based on "
Treehouse of Horror
''Treehouse of Horror'' is a series of annual Halloween-themed anthology episodes of the American animated sitcom and spin-off of ''The Simpsons''. Also known as ''The Simpsons Halloween Specials'', each episode typically consists of three se ...
".
#The "Treehouse of Horror 3" set was released in 2002 and included a playset based on the "Ironic Punishment Division" of Hell in "
Treehouse of Horror IV". It came with "Donuthead Homer", "Witch Marge",
Hugo Simpson and "Dream Invader Willie".
#The final "Treehouse of Horror 4" set was released in 2003 and included a playset based on
Comic Book Guy
Jeff Albertson, commonly known as the Comic Book Guy (CBG), is a Recurring character, recurring fictional Character (arts), character in the animated television series ''The Simpsons'' and Eisner Awards, Eisner-nominated Spin-off (media), spin-o ...
's "Collector's all-plastic lair". It came with "The Collector", "Clobber Girl Lisa", "Stretch Dude Bart" and
Lucy Lawless
Lucille Frances Lawless (; born 29 March 1968) is a New Zealand actress and director. She is best known for her roles as Xena in the television series ''Xena: Warrior Princess'', as Number Three (Battlestar Galactica), D'Anna Biers on the re-im ...
. All the designs were based on "
Treehouse of Horror X".
#On 2019, Funko revealed a 2-pack Kang and Kodos vinyl figure set presented as an exclusive for the 2019
San Diego Comic-Con
San Diego Comic-Con is a comic book convention and multi-genre entertainment event held annually in San Diego, California, at the San Diego Convention Center. Founded in 1970, originally showcasing primarily comic books and science fiction/fant ...
, along with a Treehouse of Horror Pop! wave, including King Homer (''Treehouse of Horror III''), Fly Bart (''Treehouse of Horror VIII''), Cat Marge (''Treehouse of Horror XIII''), Demon Lisa (''Treehouse of Horror XXV''), and Alien Maggie (''Treehouse of Horror IX'').
After the
Playmates Toys
Playmates Toys Limited is a Hong Kong toy company. The company was founded in Hong Kong in 1966 by Sam Chan Tai-ho as Playmates Industrial, manufacturing dolls for other companies. In 1975, Playmates began marketing its own line of preschool to ...
sets were finished,
McFarlane Toys produced four ''Treehouse of Horror'' themed playsets including the "Ironic Punishment Box Set" released in 2004, the "In the Belly of the Boss — Homer & Marge Action Figures" released in 2005, "The Island of Dr. Hibbert Box Set" released in 2006, and a "Lard Lad Box Set" released in 2007.
Reception
The ''Treehouse of Horror'' episodes are often among the top-rated episodes of their seasons,
and many of the ''Treehouse of Horror''s have generally been well-received by fans. However, like ''The Simpsons'' itself, critics have noted a decline in the quality of the later episodes. In its first airing, "Treehouse of Horror" finished with a 15.7 Nielsen rating and a 25% audience share, less than ''
The Cosby Show
''The Cosby Show'' is an American television sitcom created by (along with Ed. Weinberger and Michael J. Leeson) and starring Bill Cosby that originally aired on NBC from September 20, 1984, to April 30, 1992, with a total of 201 half-hour e ...
''. It was said that it "set a level of excellence that viewers never expected creator Matt Groening to repeat", although it was also described as "kind of stupid and unsatisfying".
"
Treehouse of Horror V" is considered the best episode by several critics: it finished ninth on ''
Entertainment Weekly
''Entertainment Weekly'' (sometimes abbreviated as ''EW'') is an American online magazine, digital-only entertainment magazine based in New York City, published by Dotdash Meredith, that covers film, television, music, Broadway theatre, books, ...
''s top 25 ''The Simpsons'' episode list, fifth on AskMen.com's "Top 10: Simpsons Episodes" list, and was named best episode of the sixth season by
IGN.com. In 2006,
James Earl Jones
James Earl Jones (January 17, 1931 – September 9, 2024) was an American actor. A pioneer for black actors in the entertainment industry, Jones is known for his extensive and acclaimed roles on stage and screen. Jones is one of the few perfor ...
, who guest starred in "Treehouse of Horror" and "Treehouse of Horror V", was named seventh on IGN's "Top 25 Simpsons Guest Appearances" list.
In 2006,
IGN
''IGN'' is an American video gaming and entertainment media website operated by IGN Entertainment Inc., a subsidiary of Ziff Davis, Inc. The company's headquarters is located in San Francisco's SoMa district and is headed by its former e ...
.com published a list of the top ten ''Treehouse of Horror'' segments, and they placed "The Shinning" from "Treehouse of Horror V" at the top, saying it was "not only a standout installment of the annual Halloween episode, but of ''The Simpsons'', period".
Rounding out the list were "
Dial "Z" for Zombies", "
The Devil and Homer Simpson", "
Time and Punishment", "Hungry Are the Damned", "
Clown Without Pity", "
Citizen Kang", "
If I Only Had a Brain", "
Bart Simpson's Dracula", and "
Starship Poopers". The third, fourth, and fifth episodes were each represented by two segments. The most recent episode on the list was "
Treehouse of Horror IX", from 1998.
In 2000, "
Treehouse of Horror VII" was ranked ''Simpsons'' creator Matt Groening's seventh-favorite episode, and the line he likes best is: "We have reached the limit of what rectal probing can teach us."
"King Homer" of "
Treehouse of Horror III" is one of Groening's favorite segments.
"Treehouse of Horror III" is also noted for the moment where Homer shoots
Ned Flanders
Nedward "Ned" Flanders Jr., commonly referred to by his surname, is a fictional character in the animated television series ''The Simpsons'', voiced by Harry Shearer and first appearing in the series premiere episode "Simpsons Roasting on an ...
and Bart says "Dad, you killed the Zombie Flanders!" only for Homer to reply, "He was a zombie?"
It is also one of Groening's favorite lines.
Awards
In 1996, the "Homer
3" segment of "
Treehouse of Horror VI" was awarded the
Ottawa International Animation Festival
The Ottawa International Animation Festival is an annual animated film and media festival that takes place in Ottawa, Ontario, Canada. The OIAF was founded in 1975, with the first festival held from August 10 to 15 in 1976. Initially organized b ...
grand prize. In 1998, "
Treehouse of Horror VIII" won a
Golden Reel Award for "Best Sound Editing – Television Animated Specials"; the recipients were Robert Mackston, Travis Powers, Norm MacLeod, and Terry Greene. Bob Beecher also received a nomination for "Best Sound Editing in Television Animation – Music" for "
Treehouse of Horror X".
The
second
The second (symbol: s) is a unit of time derived from the division of the day first into 24 hours, then to 60 minutes, and finally to 60 seconds each (24 × 60 × 60 = 86400). The current and formal definition in the International System of U ...
,
third
Third or 3rd may refer to:
Numbers
* 3rd, the ordinal form of the cardinal number 3
* , a fraction of one third
* 1⁄60 of a ''second'', i.e., the third in a series of fractional parts in a sexagesimal number system
Places
* 3rd Street (di ...
,
fifth,
eighth,
ninth
In music, a ninth is a compound interval consisting of an octave plus a second.
Like the second, the interval of a ninth is classified as a dissonance in common practice tonality. Since a ninth is an octave larger than a second, its ...
,
fourteenth,
fifteenth, and
eighteenth ''Treehouse of Horror'' episodes were nominated for "
Outstanding Individual Achievement in Music Composition for a Series (Dramatic Underscore)" at the
Primetime Emmy Awards
The Primetime Emmy Awards, or Primetime Emmys, are part of the extensive range of Emmy Awards for artistic and technical merit for the American television industry. Owned and operated by the Academy of Television Arts & Sciences (ATAS), the P ...
. The second and third "Treehouse of Horror" episodes were also nominated for "Outstanding Individual Achievement in Sound Mixing for a Comedy Series or a Special".
In 1996, "
Treehouse of Horror VI" was submitted for the Primetime Emmy Award in the "
" category because it had a 3D animation sequence, which the staff felt would have given it the edge.
The episode failed to win, and
Bill Oakley later expressed regret about submitting the episode.
The
twenty-third and
twenty-fifth ''Treehouse of Horror'' episodes were nominated for the same award in 2013 and 2015 respectively.
The
thirty-third episode finally won the Emmy.
See also
*
List of ''The Simpsons'' "Treehouse of Horror" episodes
* "
Halloween of Horror", the first Halloween episode not part of the "Treehouse of Horror" series
* "
Thanksgiving of Horror", a non-Halloween episode and also not part of the "Treehouse of Horror" series
Notes
References
{{DEFAULTSORT:Treehouse Of Horror (Series)
1990 introductions
American annual television specials
Anthologies
Comedy television episodes
Black comedy television episodes
Fiction about curses
Halloween television specials
Horror comedy
Surreal comedy
The Simpsons