All types of hats are disappearing right off the heads of Gotham citizens -- from police officer hats and garbage worker hats to bicycle helmets and ice-cream caps. Who's responsible? It's the Mad Hatter, one of the city's worst villains, and his gang of Wonderland thieves! Can Batman solve the mystery of the stolen hats and stop the Mad Hatter's plan to steal the capstone from Gotham's new monument? This Level 3 Scholastic Reader is packed with action and illustrated with gripping and colorful comic-book style artwork throughout.