S21E4: Treehouse of Horror XX

In "The Simpsons" Season 21, Episode 4, titled "Treehouse of Horror XX," things wrap up with the usual Halloween antics. The episode is split into three segments, each with its own storyline. In the first segment, "Dial 'M' for Murder or Press '#' to Return to Main Menu," Lisa finds herself caught in a murder plot inspired by Hitchcock's films. She ends up enacting revenge on Miss Hoover, but things spiral when Bart gets involved. Ultimately, it turns into a chaotic mess of crossed plans and unintended consequences, with Lisa and Bart's schemes going awry. The second segment, "Don't Have a Cow, Mankind," sees Springfield overrun by zombies due to a tainted Krusty Burger. Bart is immune, and the family attempts to reach a safe zone. In the end, they make it to safety, and the crisis is resolved when Bart's blood serves as a cure for the outbreak. Finally, in "There's No Business Like Moe Business," the episode takes a musical twist with Moe's bar as the setting for a parody of Sweeney Todd. Moe tries to win Marge's heart by faking Homer's death. However, Homer returns, leading to a dramatic conclusion that involves mistaken identities and theatrical chaos. The segment ends with Moe's scheme falling apart and everything returning to its usual dysfunctional normalcy.