This is book three in the Fablehaven series. If you have read the first two, and are considering the third, it should come as no surprise that I recommend picking it up. So far each book has been exciting, imaginative, and non-stop entertainment.
If you haven't read any of the Fablehaven books and are wondering if you should start, I say yes. From the very beginning, I have been captivated by Mull's books. Plus, they are so quick and easy to read that, if you don't like the first one, it will only take you a day or two to finish the book and realize it's not for you.
They are each full of magic and wonder, and serve as an excellent palate cleanser between books that require more effort as the reader. That isn't to say Grip isn't good, or worthwhile, just that it serves to remind you how fun reading can be, like Harry Potter, and not how beautiful and heartbreaking a book can be the way I Am a Cat might.
Sorry, no quote on this one!