Book 5 of The Ten Realms series. This book has very little to do with the fifth realm. This is mostly builder, which is to be expected midway through the series. Some cool advances and fun fights. But solidifying their hold is a part and then dealing with all of the other characters as the two areas are taking on a life of their own. This touches on the realm of epic fantasy with the details of all that is going on. Still a fun read.