"Treehouse of Horror IX" is the fourth episode of the tenth season of the American animated television series The Simpsons. It first aired on the Fox network in the United States on October 25, 1998. This is the ninth Treehouse of Horror episode, and, like the other "Treehouse of Horror" episodes, contains three self-contained segments: In "Hell Toupée", Homer gets a hair transplant and is possessed by the spirit of an executed criminal; in "Terror of Tiny Toon", Bart and Lisa are trapped in a special, extremely violent episode of The Itchy & Scratchy Show; and in "Starship Poopers", Marge reveals that Maggie is the product of a one-night stand with the alien Kang.

"Treehouse of Horror IX" was written by Donick Cary, Larry Doyle and David X. Cohen, and directed by Steven Dean Moore. "Terror of Tiny Toon" includes a live-action segment starring Regis Philbin and Kathie Lee Gifford. Jerry Springer and Ed McMahon also appear in the episode, voicing themselves, while Robert Englund vocally reprising the role of Freddy Krueger from the Nightmare on Elm Street film series. The episode also features Jason Voorhees from the Friday the 13th series while various characters visit the talk shows Live with Regis and Kathie Lee and The Jerry Springer Show.

Treehouse of Horror IX

In its original airing on the Fox Network, the episode had an 8.6 Nielsen rating. In 1999, composer Alf Clausen was nominated for a Primetime Emmy Award for Outstanding Music Composition for a Series for his work on the episode.

Treehouse of Horror IX

Plot

Opening sequence

The opening sequence is exactly the same as normal, but with a dark twist, as Bart does the chalkboard lines in red paint, and then the entire family is killed one by one as they arrive home (Bart falls off his skateboard when he lands on the car, Lisa is catapulted into the garage wall when she strikes Bart in the driveway, and Homer is crushed by Marge and Maggie, who presumably also die in the crash). On the couch, Freddy Krueger and Jason Voorhees are waiting for them and wonder where they are.

Treehouse of Horror IX

Hell Toupée

In a parody of the Amazing Stories episode "Hell Toupee", Snake is arrested for smoking inside the Kwik-E-Mart. Chief Wiggum explains that this is Snake's third strike, so he will be executed in accordance with the three strikes law. Before hauling Snake away, Chief Wiggum points out that Apu, Moe, and Bart are all witnesses; Snake vows to kill them all.

After the execution, which happens on live TV, Homer visits Dr. Nick, who transplants Snake's hair onto Homer's head. When Homer goes to sleep the following night, it plants its roots in Homer's brain. With the hair controlling his mind, Homer murders Apu and Moe. Bart realizes that the other two witnesses have been killed, and Homer vows to protect him. Homer locks himself and Bart in a room, but Snake's hair takes control of him. Homer tries to kill Bart with a sledgehammer. Bart begs Homer to fight the hair. After a struggle, Homer rips the hair off his head. However, the scalp comes to life, attempting to suffocate Bart whilst Homer ineffectually punches it, if anything hurting Bart. Wiggum bursts in and shoots the hair dead, then wryly comments on how it has been "a bad hair day", causing everyone to laugh. Marge tries to remind everyone about the two murders, but then suddenly gets the pun and joins in.

The Terror of Tiny Toon

In a parody of Stay Tuned, Marge forbids Bart and Lisa from watching the Itchy & Scratchy Halloween special while she goes trick-or-treating with Maggie, removing the batteries from the remote control. When Marge leaves, Bart finds plutonium in Homer's toolbox and hammers it into the remote's battery slot. When they use the remote, the kids enter the world of Itchy and Scratchy, and begin to laugh at their antics, angering the cat-and-mouse duo, who proceed to hunt them to teach them a lesson. Both groups even pass by Poochie at one point.

Back in the Simpson house, Homer enters the living room and watches the show. Oblivious to what he sees, Homer decides to change the channel and Bart, Lisa, Itchy, and Scratchy wind up on Live with Regis and Kathie Lee. They disrupt the cooking segment of the show with Regis Philbin and Kathie Lee Gifford causing Kathie to call it a day while stating that Dom DeLuise can interview himself. Then Bart, Lisa, Itchy, and Scratchy end up back at Itchy's house. They urge Homer from inside the TV to use the remote to get them out, and he eventually succeeds just as Marge and Maggie arrive home.