S20E4: Treehouse of Horror XIX

In the episode "Treehouse of Horror XIX," which is the fourth episode of season 20, the Simpsons deliver their annual Halloween special with three separate segments. In "Untitled Robot Parody," Springfield is overrun by transforming robots that wage war against each other, leading to a chaotic showdown. The resolution comes when Lisa convinces them to stop fighting by showing the futility of their war, and they leave Earth peacefully, leaving behind a mess for the humans to clean up. In "How to Get Ahead in Dead-Vertising," Homer becomes a hitman for advertising executives who want celebrities dead so they can use their images without paying royalties. However, when Homer kills Krusty, he ends up in Heaven's court, and they throw him back to Earth. The segment ends with a twist as Homer accidentally kills God, causing chaos in the afterlife. The final segment, "It's the Grand Pumpkin, Milhouse," parodies Peanuts as Milhouse believes in the Grand Pumpkin, who turns out to be real but also vengeful and hungry for humans. After eating several characters, Lisa saves the day by summoning Tom Turkey, another holiday spirit who defeats the Grand Pumpkin. The episode wraps up with a seasonal nod as Tom Turkey promises a feast next Thanksgiving.