Treehouse Of Horror 2010. Every halloween, however, reality and continuity are totally ignored as the team behind the show mark the holiday by airing their annual “treehouse of horror” episode. They all eat with long forked tongues.

The 27th season marked the first time two treehouse of horror specials were aired, with one episode. The treehouse of horror series, formerly known as the simpsons halloween specials, are an annual tradition in which there is a special halloween episode consisting of three separate,.