"Treehouse of Horror VII" is the first episode of the eighth season of the American animated television series The Simpsons. It originally aired on the Fox network in the United States on October 27, 1996. In the seventh annual Treehouse of Horror episode, Bart discovers his long-lost twin, Lisa grows a colony of small beings, and Kang and Kodos impersonate Bill Clinton and Bob Dole in order to win the 1996 presidential election. It was written by Ken Keeler, Dan Greaney, and David X. Cohen, and directed by Mike B. Anderson. Phil Hartman provided the voice of Bill Clinton. This is the first Treehouse of Horror episode to be a season premiere. Plot Opening In the kitchen, Homer lights a jack-o'-lantern, but ends up lighting his arm on fire. He runs off screaming while the title, "The Simpsons Halloween Special VII" is shown on screen. "The Thing and I" Bart and Lisa hear strange noises coming from the attic. They investigate and discover that there is a monster. Homer and Marge realize that the creature has escaped, prompting Marge to call Dr. Hibbert. He explains that Bart has an evil twin named Hugo. The two were originally conjoined, but were separated at birth. Hugo was deemed too evil to live in society, so they chained him in the attic, where they feed him fish-heads. Bart stays behind as the others leave to search for Hugo, but Bart realizes that Hugo never left the house. Hugo takes Bart to the attic and ties him up, so that he can reattach himself, but Hibbert returns and knocks out Hugo. He then realizes that Hugo's scar is on the wrong side, therefore Bart is technically the evil twin. To make amends for their error, Hibbert and the Simpson family sit down to a turkey dinner with Hugo, leaving Bart locked in the attic with only Hugo's fish-heads to eat. "The Genesis Tub" In preparation for the school science fair, Lisa performs an experiment in a petri dish to see if cola will dissolve her baby tooth. Bart gives Lisa a static electric shock, claiming it is part of his project to prove that "nerds conduct electricity". The electric charge is then passed on to the tooth when Lisa tries to touch it, causing it to undergo an unusual reaction which creates a race of miniature beings. Lisa discovers this when inspecting the contents