From the back cover. "Horrible Harry and his classmates all love Halloween. Everyone wears a costume to school--even Miss Mackle! Harry's costumes get scarier and scarier each year. He's been a slithering snake, a slimy green Loch Ness Monster, and a bloody Count Dracula. So everyone in Room 3B is waiting to see what Harry will be this year--and they're all in for a really big surprise!" Bookshare has many more Horrible Harry books.