Among many other things, the Hogwarts series is a series of mystery books, so we expect a lot of AHAs when mysteries are solved. The big AHAs come at the end of each book, and the biggest AHAs come at the end of the series. So far, our trio has AHAd that Fluffy is guarding something, probably the grubby little package from Gringotts. The name Nicolas Flamel is a loose end thrown out by Hagrid, and the kids have rightly figured from Hagrid’s nervous responses that Nicolas Flamel is an important clue to their current mystery: What is Fluffy guarding?