I have really been looking forward to re-reading this one. This is where things start heating up.  Harry blows up Aunt Marge, there’s the lovely bit with the Knight Bus.  Remus Lupin and Sirius Black, the marauders.  Oh yes Sirius and Lupin I adore them.  So many characters and elements get introduced in this novel I can’t wait to get reacquainted with them. I remember Prisoner of Azkaban as being the book where the stakes really got high and it felt tightly plotted and well executed.  The doorstops that come after this loose some of the tightness that is in this one. Also the cover has a purple header. I…