THE SIMPSONS: Beware of ouija boards, vampires and unexpected tricks in the 21st annual "Treehouse of Horror" trilogy. In "Tweenlight," Lisa becomes smitten with mysterious new student Edmund (guest voice Daniel Radcliffe) only to discover he is a vampire. After Lisa and Edmund run away to "Dracula-la Land," Homer must come to the rescue to save her before she becomes one of the undead in the all-new "Treehouse of Horror XXI" episode of THE SIMPSONS airing Sunday, Nov. 7 (8:00-8:30 PM ET/PT) on FOX. THE SIMPSONS ™ and © 2010 TTCFC ALL RIGHTS RESERVED.

THE SIMPSONS: Beware of ouija boards, vampires and unexpected tricks in the 21st annual "Treehouse of Horror" trilogy. In the final frightening fable, "Master and Cadaver," Homer and Marge embark on a romantic second honeymoon on a private boat, but their getaway is interrupted when they rescue Roger (guest voice Hugh Laurie) and learn the story of his deadly escape in the all-new "Treehouse of Horror XXI" episode of THE SIMPSONS airing Sunday, Nov. 7 (8:00-8:30 PM ET/PT) on FOX. THE SIMPSONS ™ and © 2010 TTCFC ALL RIGHTS RESERVED.

THE SIMPSONS: Beware of ouija boards, vampires and unexpected tricks in the 21st annual "Treehouse of Horror" trilogy. In "War and Pieces," the first of three spine-tingling tales, when Marge encourages Bart and Milhouse to try playing wholesome, classic board games, the best friends discover that board games aren't boring after all when they find themselves playing a real life game in the all-new "Treehouse of Horror XXI" episode of THE SIMPSONS airing Sunday, Nov. 7 (8:00-8:30 PM ET/PT) on FOX. THE SIMPSONS ™ and © 2010 TTCFC ALL RIGHTS RESERVED.

THE SIMPSONS: Beware of ouija boards, vampires and unexpected tricks in the 21st annual "Treehouse of Horror" trilogy. In "Tweenlight," Lisa becomes smitten with mysterious new student Edmund (guest voice Daniel Radcliffe) only to discover he is a vampire. After Lisa and Edmund run away to "Dracula-la Land," Homer must come to the rescue to save her before she becomes one of the undead in the all-new "Treehouse of Horror XXI" episode of THE SIMPSONS airing Sunday, Nov. 7 (8:00-8:30 PM ET/PT) on FOX. THE SIMPSONS â

THE SIMPSONS: Beware of ouija boards, vampires and unexpected tricks in the 21st annual "Treehouse of Horror" trilogy. In the final frightening fable, "Master and Cadaver," Homer and Marge embark on a romantic second honeymoon on a private boat, but their getaway is interrupted when they rescue Roger (guest voice Hugh Laurie) and learn the story of his deadly escape in the all-new "Treehouse of Horror XXI" episode of THE SIMPSONS airing Sunday, Nov. 7 (8:00-8:30 PM ET/PT) on FOX. THE SIMPSONS ™ and © 2010 TTCFC ALL RIGHTS RESERVED.

THE SIMPSONS: Beware of ouija boards, vampires and unexpected tricks in the 21st annual "Treehouse of Horror" trilogy. In "Tweenlight," Lisa becomes smitten with mysterious new student Edmund (guest voice Daniel Radcliffe) only to discover he is a vampire. After Lisa and Edmund run away to "Dracula-la Land," Homer must come to the rescue to save her before she becomes one of the undead in the all-new "Treehouse of Horror XXI" episode of THE SIMPSONS airing Sunday, Nov. 7 (8:00-8:30 PM ET/PT) on FOX. THE SIMPSONS ™ and © 2010 TTCFC ALL RIGHTS RESERVED.