Final installment in the 5 part Fablehaven series. All in all, a great addition to the YA fantasy/adventure market. It follows the same sort of trajectory of following young protagonists as they apprentice and learn a magic/supernatural trade, being put in peril and tested in real world scenarios, and ultimately being responsible for saving the world. In Fablehaven, this is modified somewhat in that it is a sister/brother team, and as the books progress, both Kendra and Seth share equal time in the books. In addition, they always work as part of larger teams, which are made up of adults (adult humans, dragons, unicorns, satyrs, etc.). I like this richer adult landscape, and the fact that the parents exist, and grandparents exist. I did grow a little tired of Mull repeatedly having his characters offer for Kendra to stay back, out of the fighting. It seemed like he portrayed that dynamic a lot more, while Seth, the younger brother, was always getting in trouble for his derring-do attitude. But, in the end, Kendra always ends up in the thick of the fighting, and is always a pivotal member of the team, and for that, I'm glad that this is a book that should appeal to both boys and girls (both my nephew and niece have loved them).