A Robert Pattinson lookalike voiced by Daniel Radcliffe would appear on "The Simpsons" annual "Treehouse of Horror". The yellow character is a vampire named Edmund who strikes up a friendship with Lisa before she realizes that he has fangs. When a romance blossoms, the young lovers run away to Dracula-la Land, leaving Homer to come to Lisa's rescue.
The segment is called "Tweenlight" in reference to Pattinson's starring vehicle "Twilight". The actor who plays Edward Cullen on the vampire series is not involved in the "Treehouse of Horror XXI" so producers tapped his "Harry Potter" co-star Radcliffe to lend a voice.
The annual horror episode is not airing on Halloween, despite the festivity falling on Sunday. It will instead air on November 7 with a supernatural thing aka ouija boards and unexpected guest aka Hugh Laurie in addition to vampires.
In "War and Pieces," the first of three spine-tingling tales, Marge, worried about the effects of excessively violent video games, encourages Bart and Milhouse to give wholesome, classic board games a shot. The best friends discover that board games aren't boring after all when they find themselves playing a real-life game in which they must beat all the challenges before they are allowed to return to home.
In the final frightening fable, "Master and Cadaver," Homer and Marge set sail on a romantic second honeymoon, but are interrupted when they rescue Roger (guest voice Hugh Laurie), a castaway who escaped an attempted poisoning on his ship. Convinced that Roger is sabotaging their getaway and plotting a murder of his own, Homer and Marge take matters into their own hands.