This is the story of the seventh sister, Nicolette.
As always, there are too many typos. Too many places where the wrong (but similar) word is used. It does get quite irritating. Also, there is far too much repetition in these books and we get the same story over and over again. Different viewpoints, but the same story over and over, and that gets really annoying.
I didn't really warm to Theo. His behaviour makes him unlikeable, particularly after the last book, and it's hard to see him in the role of hero.
In spite of all of that, it was a reasonably enjoyable book.