Evelynn Potter is used to trailing after her twin Harry, trying (and usually failing) to keep him out of trouble. She's been content to be off to one side, out of the spotlight, for most of their Hogwarts years because it means slightly less stress for her. But this year, things are changing. There's a new development at Hogwarts that means trouble for everyone. But there's also a surprising new friendship that no one could expect. This book starts in year 5! There is no book before this with years 1-4, just so you don't freak out when you can't find one.