Billy Sure Kid Entrepreneur and the Attack of the Mysterious Lunch Meat (Billy Sure, Bk. 12)

There's something mysterious oozing its way down the Fillmore Middle School cafeteria, and up - it's more mysterious than normal! There's a new lunch lady in charge, and her menu is so terrible it can't be solved with Gross-to-Good Powder. But there's something else mysterious too. Everyone who eats the new food turns into a zombie! Is this a food fight that Sure Things, Inc. can't win?