Full review originally posted on The Book Addict's Guide: HARRY POTTER AND THE PRISONER OF AZKABAN is really the first in the series where I feel like the books and the movies really start to differ. Obviously the movie still stays pretty true to the book, but I was surprised quite often how many little things were changed for the film adaptation, especially the big reveal at the end. As a re-read now and having watched the movies so many times, it's definitely a bit anti-climactic BUT I've seen the movies so many times that obviously that version is engrained in my mind. I haven't done a re-read of Harry Potter since... well, probably since right after high school so that's about ten years that have gone by without actually reading the books. I forgot how many details just aren't able to fit into the movies for time reasons alone but re-reading made me so incredibly happy because I got to geek out over this whole magical universe all over again and refresh my memory on the things that the movies just can't fit. 
 This book actually used to be my least favorite of the series, which also makes it entirely plausible that that's the reason why I don't seem to remember as much of it as I thought I had. Looking back, I have no idea why it was my least favorite because it has so many elements I love! Time travel. Professor Lupin. Big reveals. Mistaken identities. I can remember what it was that just didn't click with me the first couple times I read it but I can definitely say that it's back up there for me, although it still won't be my favorite. 
 I always feel like I have so much and yet so little to say with my re-reads of Harry Potter because it doesn't really need a formal review since most people have already read the books and those who haven't, well, I don't want to spoil it because I still have hope you will read them! So I'll just go over a few differences I remember from the book and the movie -- Actually, if you haven't read the books or seen the movies yet, LOOK AWAY because some of these might be mild spoilers. 
 *The importance of Crookshanks. Yes, Hermione's bandy-legged ginger cat with a bottlebrush tail and smooshed face (seriously -- described that way so many times that I can repeat it!) did appear in the movies BUT the movies glossed over the fact that he's part kneazle AND that Crookshanks was sort of working with Sirius when he was in dog form and that's part of the reason the kids knew they could trust him. Not to mention the fact that Crookshanks has many more humanlike characteristics in the book, intelligence-wise, and that he was the one who immobilized the Whomping Willow so Harry and Hermione could get in. 
 *The prominence of the animals in the series. Crookshanks was so important to this book but... He also never goes away though out the series. Hedwig is really the only pet that gets featured in the movies because she's so important to Harry, but Hermione always has her cat and I totally forgot about Pigwidgeon's appearance once Ron loses "Scabbers". 
 *All of the details in the Shrieking Shack. When it comes down to it, the movie just wasn't able to include all of the details. Harry, Sirius, and Lupin have a long, long, long talk about Peter Pettigrew. I can totally understand why the movie kept it short and sweet -- it felt like this talk was really long as I was listening to the audio and knowing what happens, I was anxiously awaiting for the scene to continue on BUT there's a lot of important info that gets shared here, especially regarding Harry's parents and their relationship with Sirius, Lupin, and Pettigrew. 
 *The Marauder's Map. I. LOVE. THE MARAUDER'S MAP. I don't know why but I just do. The map in the book is MUCH more insulting to Professor Snape (a funny but tense moment!) and I feel like we get much more information regarding the creators of the map and the reasons why they created it. In fact... Do we even get an explanation in the movies? Is there a brief glossing over from Lupin? I honestly can't remember. 
 *The Firebolt. In the movie version, Harry doesn't get to use his Firebolt until the very end of the book, after the entire plot, basically. In the book, his broom is confiscated to be tested for jinxes and hexes but he does get it back to use in Quidditch matches! I forgot ALL about that! He totally uses the Firebolt's speed to flatten the other teams. 
 Those are the highlights that I can remember! I'm really glad I enjoyed this one so much this time around and honestly, I can't even pinpoint why it used to be my least favorite.