The Simpsons (1989– )
4 user 1 critic

Treehouse of Horror XXIII 

A black hole threatens to swallow Springfield, Homer tries to find the source of paranormal activity, and a "Back to the Future" parody in which Bart keeps Marge from marrying Homer.


Steven Dean Moore (as Steven 'Freaking' Moore), Mike B. Anderson


Matt Groening (created by) (as Bat Groening), James L. Brooks (developed by) (as James 'Haha The Devil Bought Facebook' Brooks) | 4 more credits »




Episode cast overview:
Dan Castellaneta ... Homer Simpson / Mayor Quimby / Kodos / Groundskeeper Willie / Santa's Little Helper / Sideshow Mel / Mobster / Mayan Homer / Mayan Homer (voice) (as Dan Funsize-aneta)
Julie Kavner ... Marge Simpson / Patty Bouvier / Selma Bouvier (voice) (as Pumpkin Kavner)
Nancy Cartwright ... Bart Simpson / Ralph Wiggum / Nelson Muntz (voice) (as Nancy 'Thankenstein' Cartwright)
Yeardley Smith ... Lisa Simpson (voice) (as Your Name Here)
Hank Azaria ... Chief Wiggum / Moe Szyslak / Professor Frink / Comic Book Guy / Cletus Spuckler / Kirk Van Houten / Bumblebee Man / Sea Captain / Camera Guy (voice) (as Blank A-Stare-ia)
Harry Shearer ... Reverend Lovejoy / Lenny Leonard / Ned Flanders / Harlan Dondelinger (voice) (as Phone Hacky Shearer)
Jon Lovitz ... Artie Ziff (voice)
Marcia Wallace ... Edna Krabappel (voice) (as Macabre Marcia Wallace)
Chris Edgerly ... Alien #1 (voice) (as Night of the Living Dead-gerley)
Pamela Hayden ... Milhouse Van Houten (voice) (as Milhouse of Horrors!!!)
Tress MacNeille ... Crazy Cat Lady / Alien #2 (voice) (as Terror MacNihl)


The opening titles fulfil a Mayan prophecy that the world will end in 2012 when giant stone gods destroy Springfield; The Greatest Story Ever Holed:- A black hole appears in Springfield and Lisa hides it in the Simpsons' basement. However, as the family use it for garbage disposal it sucks more and more in, eventually devouring the whole of Springfield, except Maggie, who blocks it with her pacifier. Un-Normal Activity:- Homer sets up a camera to record paranormal, nocturnal events in the house. When a demon appears it transpires that Marge is responsible, following a childhood pact and Homer has to placate the demon with sex. Bart and Homer's Excellent Adventure:- Bart gets into a time machine taking him back to 1974, where he meets a teen-age Homer, who hides in the time machine and returns to the present to find Marge married to Artie Ziff. He summons all the Homers in history to help redress the balance. Written by don @ minifie-1

Plot Summary | Add Synopsis


Animation | Comedy


TV-PG | See all certifications »






Release Date:

7 October 2012 (USA) See more »

Filming Locations:


Company Credits

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Technical Specs

Sound Mix:




Aspect Ratio:

16:9 HD
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Did You Know?


Millhouse is sleeping on both Bart & Lisa's bedroom floor at the same time. See more »


Homer Simpson: Lisa, do you have a stray dog in the basement?
Lisa Simpson: Well, it's worse than a stray dog.
Homer Simpson: Two stray dogs?
Lisa Simpson: It's a black hole.
Homer Simpson: That was going to be my next guess.
Lisa Simpson: Are you sure your next guess wasn't three stray dogs?
Homer Simpson: Maybe.
See more »


References Die Another Day (2002) See more »


(They Long to Be) Close to You
Written by Burt Bacharach and Hal David
Performed by The Carpenters
See more »

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User Reviews

Best Treehouse Of Horror's In A While,
27 March 2013 | by lesleyharris30See all my reviews

Treehouse Of Horror 23 is a great Simpsons episode with a three hilarious segments and funny parodies.Its definitely one of the best Treehouse Of Horrors in a while,I've seen all of them,and I like them all,but this one is the best there has been in a good few years,because ones like last years are largely considered the worst.My main problem with last years episode is that the segments all felt pushed together and seem like the writers wanted to write much more for each of them,but didn't have enough time,but they balanced them out well in this one.My favourite part was the Paranormal Activity parody,then the Back To The Future parody,but I did enjoy the black hole segment as well.

Professor Frink accidentally causes a black hole to open up in Springfield,Homer puts cameras all around the house when the family notices strange things occurring at night and Bart goes back in time and stops Homer and Marge from ever being together,and she marries Artie Ziff (returning guest star Jon Lovitz).

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