High Quality Content by WIKIPEDIA articles! "Treehouse of Horror XXII" is the third episode of the twenty-third season and the twenty-second Halloween episode of the animated comedy series The Simpsons. It originally aired on the Fox network in the United States on October 30, 2011. The episode is part of the Treehouse of Horror series, which is an episode divided into three separate stories and an opening that is a parody of scary or Halloween themed stories. This episode`s stories were primarily spoofs of the French film The Diving Bell and the Butterfly, the television series Dexter, and the American film Avatar. The opening was a parody of the autobiographical film 127 Hours, in which the subject Aron Ralston loses an arm.