The three young keyholders are back and this time the magic is taking over their town. Their mentor, Mr. Leery, is still too sick to be much help but something strange is going on with all the grownups. The teachers are being especially mean and only the keyholders suspect this might be another evil plan by the Boggart queen. The kids have to work together if they're going to figure out how to get the grown-ups back to normal. First, I love the Invasion of the Body Snatchers feel to this story. What could be scarier for a kid than to have all the adults turn crazy mean? I liked the interesting twist the authors made on a very old magical notion. I'm still hoping for a little character growth in the three keyholders, as the bickering does get a bit old. And I'm hoping we don't have to wait out the entire series to find out what the mystery is about the magical rat who is one of the helpers the children rely on. We've had hints for three books now that she's more than she seems but the kids still don't seem the least bit interested in learning what she really is (this despite the fact that they once saw a house cat turn into a griffin—who know what a rat might turn into?) However, though as an adult I find the slow pace of the series movement a little frustrating, my ten year old thinks they're just great reading "snack food"—fast and fun. Certainly the combination of magic and mystery in this particular book was very engaging and I'm certain it'll keep readers turning pages quickly.