This should be another quick read. Harry is in pursuit of/hiding from his bizarre and dangerous godfather, all while dealing with the horrors of being 13. I think this one is one of my favorites in the series, and I also think it was the one that was most-trashed by the movie. (Which means, if you've only seen the movie, you oughta read the book!) 
 I will add that one thing that always caught my eye was the Sirius timeline. 
 1. Fudge says Black asked for his copy of the Daily Prophet, which is where he saw Scabbers 
 2. Black breaks out the next day 
 BUT he was muttering "He's at Hogwarts" for several days prior to the breakout. ??? 
 Otherwise, a very well written and enjoyable book that, no surprise, I finished again in one day!