Reveal hidden images throughout Hogwarts and the wizarding world in this official Harry Potter activity book! Harry Potter, Ron Weasley, Hermione Granger and the rest of their friends at Hogwarts are always casting spells and brewing potions to reveal - and hide - secrets in the wizarding world. Now you can do the same with the help of three pairs of magic-revealing glasses in this fun, interactive activity book! Put on Harry's glasses to see who's hiding under his Invisibility Cloak. Try out a pair of Quidditch goggles to spot the Golden Snitch. And wear Luna's Spectrespecs to discover your favourite characters' Patronuses! With more than 20 hidden images from the films, this is the perfect book for any Harry Potter fan!