There's a plague spreading across Fablehaven that is turning creatures of light to dark and the Sorenson's have no clue how to fight it or who they can trust. At the same time, Kendra travels to another secret preserve in a race to recover one of the other hidden artifacts before the Society of the Evening Star gets to it first.
This was the best Fablehaven book so far. As the Sorenson children have matured so have the contents of the books. The creatures get just a little bit darker and the challenges more complex. Mull also brings in some new characters and introduces us to other characters that we've heard about but never met in the story. These aren't the most brilliantly written books and they're not very complex but they are fun, fast reads and the author is very imaginative with his magical creatures. Grip of the Shadow Plague had some very touching scenes in it that I enjoyed a lot. I'm excited to see where this series is going to go - especially since the next book as a big dragon on the front. I love dragons!
Book 11 in the 101 Fantasy Challenge.