This is not meant to be a simple but a review done by a non-fan, that does not mean that I am fascinated by the saga, but I admit I've never read a Harry Potter book and the first film I've seen but without much enthusiasm. This confirms the tendency toward chapter in the saga that began with the Prisoner of Azkaban in which the boy wizard for children has become more and more dark and closer to subjects 'adult'
, good and evil are mixed up and fight even disguise themselves in the human world. I find that the pace is excellent and is the palpable chemistry between the actors shot (on the other hand the young players on that set are practically grew up), I admit my fondness for Helena Bonham Carter and Alan Rickman. A good film, even for those with large gaps like me. 
