Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Review

All of the "Children of the Red King" books have the same theme, "Save person from evil Yewbeams and Bloors," and this book also follows the theme. This gets a bit annoying. Also the author continally gives the readers a hope that Charlie will find his father, but that never happens (and I expect it never will). Also too many new characters are introduced, and it is very awkward that Olivia "suddenly" has a talent. I liked the first three books, but this one is disappointing.