This is such a great book! The storyline where all the adults dissapeared would be interesting enough, but adding in mutant powers and sinister characters makes it spectacular. This book reminds me a little of "The Girl Who Owned A City" but with the basic idea of adults disappearing (except in "The Girl Who Owned A City" all the adults died of a disease) and kids dealing with bullies trying to take over as the main characters try to make sense of this new world and try to get things back to normal (but minus the awesome powers!) I love this book, and I can't wait to read the rest in the series!