At, we show you how pop culture (TV, movies, books, ads) is connected to other pop culture. For example, what song is in that Super Bowl commercial or TV episode? What book is that character reading? What music is another song sampling? We answer these questions and many more.

The Simpsons: Treehouse of Horror XX / Season: 21 / Episode: 4 (00210004) (2009)

Home > Explore > TV/Films > Television Episodes > Treehouse of Horror XX
The Simpsons: Treehouse of Horror XX / Season: 21 / Episode: 4 (00210004) (2009) (Television Episode)
Buy Television Episode Now

The Simpsons

Treehouse of Horror XX (Television Episode)

Season: 21
Episode: 4
Production Code: 00210004

October 18, 2009
  • Download on iTunes
  • Buy on
Dial M for Murder or Press "#" to Return to Main Menu - In this homage to Alfred Hitchcock's supense/murder mysteries, Lisa teams up with Bart to get revenge on their teachers after Ms. Hoover sends Lisa to detention, but the plan goes awry when Bart kills Ms. Hoover and wants Lisa to murder Mrs. Krabappel. 
Don't Have a Cow, Mankind - In this send-up of such zombie/apocalypse horror films as 28 Days Later and Children of Men, Krusty the Clown introduces a new hamburger that zombifies the entire town -- except for Bart, whose natural immunity to the burger becomes the key to stopping the zombie attacks. 
There's No Business Like Moe Business - In this Sweeney Todd-esque musical, Moe creates a new beer that becomes a sensation — thanks to Homer being impaled on the microbrew machine and bleeding into the beer supply.