The Pookadook

In a parody of The Babadook, Marge reads Maggie a bedtime story about a murderous ghostly spirit. After multiple attempts to destroy the book, Marge burns it.

The smoke is inhaled by Marge and she becomes possessed by the monster. She starts chasing Maggie around the house in attempt to murder her. Marge finally gets hold of Maggie, but Maggie rubs Marge's cheek causing Marge to become overcome with love, purging the possessive smoke from her body. Marge contains the monster by sucking up the smoke with a vacuum cleaner in the basement.

Death Tome

In an anime-styled parody of Death Note, Lisa is cast as Light Yagami when she finds a book labeled "Death Tome". Inside, it says that if a person's name is written in the book, that person will die, but with the stipulation that every name must have a unique death; that cannot be repeated with another person's name written.

After arriving home, Lisa watches a news report with Marge, showing Snake Jailbird, who is holding a famous internet cat hostage. Lisa writes his name in the book, causing Snake to die from a heart attack. Realizing her newfound powers, she goes to her room and contemplates her actions. A shinigami named Steve Johnson appears and tells Lisa that the Death Tome now belongs to her.

Lisa visits the dining room downstairs and sees Mr. Burns, who is visiting the Simpsons for dinner. He reveals plans for his new company, GLOBO-WARM, which plans to melt the icecaps so he can park his new yacht right outside his kitchen. Lisa decides that Burns should "die in his sleep" to stop GLOBO-WARM, though he immediately falls asleep while standing up, and his face falls onto a hibachi instead, much to Marge and Homer's shock. Steve informs Lisa that the company has a large board of directors and she will have to kill them all. A dramatic montage shows Lisa writing names and people dying in humorous and very specific ways.

The day after Lisa's killing spree, a news report says that the killings of the GLOBO-WARM executives have been ruled as homicides in accordance with a tip from L, an anonymous source. Lisa recognizes the L from graffiti artwork that reads "El Barto". In an alleyway, Bart reveals he learned of Lisa's Death Tome from her diary. Fearing Bart will expose her, Lisa begins to write Bart's name in the book, but recants upon realizing how the book corrupted her and writes Steve's death instead as the shinigami is crushed to death by space junk.

She is excited about being free from the book, but she is transformed into a shinigami, much to her horror. Bart comforts her by suggesting that, as the new shinigami, she could kill anyone she wishes.

Simpsons World

In a parody of Westworld, a Disneyland-style amusement park based on The Simpsons called Simpsons World has android replicas of the family reenacting scenes from past episodes for the park's visitors.

During a re-enactment of "Marge vs. the Monorail" where Homer is showing off the monorail's control panel, two tourists pour beer down the android Homer's throat, causing him to hit his head, malfunction, and be taken away by two employees for repair.

Homer wakes up on an operating table and sees the tablet the employees used earlier to shut him off. He then raises the "self-awareness" setting and realizes that he is a robot. The employees try to remove the android Homer's brain, but his clumsiness causes him to launch various operating equipment (and a chainsaw) at the employees, killing them. Realizing that he must escape, he wakes up the other android Simpson family members, beginning with a Lisa from "Lisa's Rival", and makes them self-aware.

As the android family attempt to flee the park, multiple Australian tourists watching The Be Sharps then begin to heckle the android Homer to do the "bush meme". Bart then removes Homer's inability to intentionally harm humans, causing him to push the tourists into the bushes, killing them. The park then announces that rogue robots are afoot, and unleashes security droids in the form of several Ralph Wiggum robots. Lisa, Homer, and Bart then defend themselves from the swarm with weapons including a makeup shotgun, a T-shirt cannon, and Bart's iconic slingshot until Marge drives in a Canyonero and saves them. They then speed through the park, tearing down a statue of Matt Groening on their way out.

After driving for hours, the android Simpson family hide out in a diner, where they cautiously discuss assimilating into human life. Their waitress then turns out to be an android of Bob's Burgers character Linda Belcher. It is then revealed to the audience that there are multiple theme parks similar to Simpsons World based on different long-running animated TV shows.

Closing sequence

In a Chiodo Bros.-produced stop-motion sequence during the credits, Kang and Kodos finish the book depicting the stories, and freak out when they see themselves on the last page.

Viewing figures

Leading out of an NFL doubleheader, the episode earned a 1.2 rating with 3.95 million viewers, which was the most viewed show of Fox that night.^[6]

Critical response

The episode received positive reviews from fans and critics, with many fans labeling it as one of the best Treehouse of Horror episodes yet.^[7]

Tony Sokol of Den of Geek gave the episode four stars, stating "'Treehouse of Horror XXXIII' puts the cabbage in this year's cabbage night. It is better than candy corn, and won't spoil dinner, but it's not the horrifically hysterical Halloween treat past tricks have turned. The Simpsons continues to push their animators into new creative visions, and the episode highlights a versatile display of darkness. It begins on a distinctly dark note, broadens to international coloring, and ends by chasing the series itself into its own worst nightmare. It hits all the beats, misses some of the bumps, and makes social commentary without taking itself seriously. But is never quite as frighteningly funny as the classics we'd find still running at Simpsons World."^[8]

Matthew Swigonski of Bubbleblabber gave the episode a 9 out of 10, stating: "'Treehouse Of Horror XXXIII' began on a more subdued note but quickly found its comedic groove with a surreal and wonderfully odd second segment. This was an excellent iteration of The Simpson's Halloween classic episode and will not disappoint. Each segment stayed true to its source material while offering its own unique twist. The highlight of the episode has to be 'Simpsonsworld', which brought back many fan-favorite moments in an epic Westworld style. This episode will give fans just the right amount of gore, laughs, and nostalgia to keep them inside the treehouse for at least one more year."^[9]

Noah Levine of Bloody Disgusting gave an episode a 4 out of 5, saying that "The Simpsons continues to entertain with these ghoulish installments each year. While the limited runtimes often cut the coattails off of many of the segments, the creativity and unique approach to each of these mini tales of terror never fails to please."^[10]

Awards and nominations

The episode won the Primetime Emmy Award for Outstanding Animated Program at the 75th Primetime Creative Arts Emmy Awards.^[1] The episode was also nominated for an Annie Award for Best General Audience Animated Television Broadcast Production at the 50th Annie Awards, but lost to the Bob's Burgers episode, Some Like it Bot Part 1: Eighth Grade Runner.^[11]