Extras 4th book in the uglies series

This is the fourth book of the series the uglies and this book is about a new character  in the series of the uglies her name is Aya, Aya fuse she is a person who is kind of mysterious u=in many different ways. This is a book that you have to get into before you actually like it. This book doesn't really have a good ending in my opinion. This is a very good book though.