Fuzzy is a good manager, and he sets out with a lot of deliberation to assess the mystery. He corrals his allies, does his research, and is able to deal fairly with the "ghost" when it is located. He also has pretty strong opinions as to what makes an appropriately suitable guinea pig costume-- and it does NOT involve a pink tutu!
The page decorations are fun, and done by Hale himself, which is a nice addition to the book. This series is bound to be a popular choice in classroom libraries and at book fairs. My own daughter still has her elementary copy of The World According to Humphrey (2004), and it was always the book she took to school as a tension reliever during state testing!