Book excerpt: Matt Groening, The toastmaster of trick-or-treat,whips up a witches' brouhaha of crazed clown cars, possessed cereal boxes, haunted hospitals, afterlife-binding cocktail napkin I.O.U.s, ring-driven fellowships, neighborly vampires, and costumed comic book guys. Add a revenge-filled bottle of Amontillado, and a rippingly good yarn from merry and bloody olde England, and you have a pleasingly putrid and asphyxiatingly amusing tome of tonsil-tickling terror and Halloween howl-arity with The Simpsons.