Learn about the spells, potions, creatures, and classes seen in the Harry Potter films in this official interactive activity book -- including a UV light and pen in the shape of Hermione''s wand!Harry Potter and his friends learn lots of magic while attending Hogwarts School of Witchcraft and Wizardry. Now you can learn all about it too in this official Harry Potter Spell and Potion Book!This official book walks readers through many of the magical spells, potions, and creatures encountered throughout the films. Meet the professors who teach Harry and his classmates at Hogwarts. Discover how to get rid of a pesky Boggart, which spell will help you escape the clutches of Devil''s Snare, and what ingredient should not be added to a Polyjuice Potion. (Hint: It''s cat hair.)Plus, use the included light-up wand pen to write hidden notes and complete fun, interactive activities -- like revealing which magical creatures live beneath the Black Lake and what happens when you cast Engorgio on a tiny spider.With tons of movie facts throughout and full-color art on every page, this interactive acitivity book is a must-have for all fans of the Harry Potter films!