The Caretaker’s Guide to Fablehaven is not the type of book I typically read. I generally prefer reading the book to reading the book about the book. (I never got particularly excited about Fantastic Beasts and Where to Find Them or Quidditch Through the Ages despite loving Harry Potter and re-reading the entire series many times over.) However, The Caretaker’s Guide serves as both an excellent refresher for Mull’s upcoming Fablehaven sequel, Dragonwatch, and as a wealth of knowledge for super-fans of the existing series.
All the important characters from Fablehaven, both heroes and villains, show up in one form or another in this book: Seth and Kendra provide entertaining comments and additions (that make it feel like this is a real book being updated by each generation of caretakers). Villains/demons such as Zzyzx and Muriel the witch are featured in multiple places. The book is also a great way to expand your knowledge of the Fablehaven world and, for younger audiences, a way to imagine being a caretaker-in-training for Fablehaven.
If you can’t get enough of Fablehaven, this is the perfect book to help you bide your time until the sequel series comes out in 2016. (Otherwise, just pick one of Mull’s series, I have yet to be disappointed.)