Author and Harry Potter fan Duncan Levy recognizes that "Wingardium Leviosa" may be the most popular spell incantation from the world of Harry Potter, but he'd be the first to remind fans that it isn't the only one. The Unofficial Harry Potter Spellbook (2nd Edition) is a comprehensive companion for fans looking to delve deeper into the magical world of Harry Potter. Written by fifteen-year-old author Duncan Levy, this extensive collection...