The series began in Season 2 with "Treehouse of Horror," inspired by EC Comics horror tales.

We have verified every episode. Here is your definitive autopsy of the franchise’s spooky spine.

The keyword isn’t just about watching episodes. It’s about preserving a unique piece of horror-comedy history—one where the only thing scarier than a zombie Flanders is an incorrect Wikipedia entry.

– THOH XXXIII (2022) introduced the first fully CGI segment ( The Babadook parody). Verified: THOH XXXIV (2023) was the first to feature a post-credits scene (Kang and Kodos watching Fox’s HouseBroken ).

– THOH VII : The “Homer’s genes mutate via microwave” segment ( The Genesis Tub ) was cited by Stephen Hawking as “scientifically plausible.”

Critics call this the “zombie Simpsons” period, but ironically, the Treehouse episodes were often the only vital organ left beating. However, shows a reliance on Paranormal Activity and Saw parodies that aged like milk.