Whether it's Expelliarmus, Riddikulus, Expecto Patronum, or the three Unforgivable Curses, here you will find everything you need to know about the spells from the Harry Potter films: When is each spell used? How do the spells work? How did the filmmakers capture the effects of the spells on screen? With plenty of exciting insider information, photos, and removable extras like posters, two booklets, and stickers, this book takes you on an adventurous, interactive journey through the wizarding world.