Treehouse of Horror XVIII

"Treehouse of Horror XVIII"
The Simpsons episode
Promotional image for the episode.
Episode no.	Season 19 Episode 5
Directed by	Chuck Sheetz
Written by	Marc Wilmore
Production code	JABF16
Original air date	November 4, 2007 (2007-11-04)
Guest appearance
Maurice LaMarche
Episode features
Commentary	Al Jean Tim Long Jeff Westbrook Tom Gammill Max Pross David Silverman Chuck Sheetz
Episode chronology
← Previous "I Don't Wanna Know Why the Caged Bird Sings" Next → "Little Orphan Millie"
The Simpsons season 19
List of episodes

"Treehouse of Horror XVIII" is the fifth episode of the nineteenth season of the American animated television series The Simpsons. It first aired on the Fox network in the United States on November 4, 2007. In the eighteenth annual Treehouse of Horror episode, Bart harbors Kodos the alien in "E.T., Go Home," Homer and Marge are husband and wife assassins who try to take each other out in "Mr. & Mrs. Simpson," and Ned Flanders is given God-like powers during his demonstration on the wages of sin in "Heck House." It was written by Marc Wilmore and directed by Chuck Sheetz.^[1] Maggie Simpson does not appear in this episode.

It is also the first Treehouse of Horror episode to premiere after the movie.