I won't lie - I totally bought this book for the cover. (Brian Allen - great job, dude!!) The book as a whole, though, is definitely worth it. I loved it. Fun story and great characters. It reminded me of old Scooby Doo shows with the kids investigating the mystery of Gargoy's disappearance. My favorite part is when you meet the father - read the book and you'll find out what I'm talking about.
This is probably the kids' favorite Halloween book so far. I have read it over and over again for the last couple of days. They laugh even harder each time. And I'm glad they like it because it gives me another chance to read it again :)