| "Treehouse of Horror XIII" | |
|---|---|
| The Simpsons episode | |
 Promotional artwork for the episode showing the family as animals in the third segment. | |
| Episode no. | Season 14 Episode 1 |
| Directed by | David Silverman |
| Written by | Send in the Clones: Marc Wilmore The Fright to Creep and Scare Harms: Brian Kelley The Island of Dr. Hibbert: Kevin Curran |
| Production code | DABF19 |
| Original air date | November 3, 2002 |
| Episode features | |
| Commentary | Al Jean Brian Kelley Kevin Curran Matt Selman John Frink Dan Castellaneta Yeardley Smith David Silverman |
"Treehouse of Horror 13" is the first episode of the fourteenth season of the American animated television series The Simpsons, and the thirteenth Treehouse of Horror episode. It first aired on the Fox network in the United States on November 3, 2002, three days after Halloween. It is the second Halloween episode to have a zombie related segment, and the last Halloween to have three separate writers credited for writing three stories (starting with "Treehouse of Horror XIV", only one writer is credited for writing the three stories). It is also the first Halloween episode to be titled Treehouse of Horror in the opening credits, as all prior Halloween episodes were referred to as The Simpsons Halloween Special. It is the first of these episodes not to have a Roman numeral used in its opening title.
In the episode, Homer buys a magic hammock that can create duplicates of anyone who lies in it in "Send in the Clones"; Lisa's call to end gun violence resurrects undead outlaws in "The Fright to Creep and Scare Harms"; and Dr. Hibbert invites everyone in Springfield to his island resort where everyone is turned into half-man, half-animal hybrids in "The Island of Dr. Hibbert".