Book Review: Five Kingdoms (2) Rogue Knight

Brandon Mull has created a fascinated universe, outside the realm of other universes, an in between spot where people go after they die, but it has been shaped for population.  And this kingdom is divided into five kingdoms, each with its own properties.  As such what is magical in one kingdom, is not magical in another.  In this book Cole, our abducted young man from Earth, finds himself in the Kingdom of Ellower.  Here things have run amok, as there are a couple of demons tearing up the country.  There is the Rogue Knight, but an even greater threat is the creature a shape changer has made using a young boy's power.  She has to be confronted, and they recruit an assortment of people to do this, including an earth friend of Cole's.
I really like these books and the characters, and the worlds.