Vital information was left out of this movie that should effect the rest of the sequels.

Rating: 5/10 (15 April 2005)

I cannot believe they let this movie be made this way after staying relatively close to the story lines in the previous two. There is never any mention about how Professor Lupin knew what the Marauders Map was and how to activate it... hmm I don't know, like maybe mentioning that he was one of the four that made the map in the first place.
They also neglect to clarify the fact that the reason Peter Petigrew and Serious Black can turn into animals is because three out of the four members of James Potters circle of friends became unregistered animagus to help keep Lupin out of trouble when he turned into a werewolf. That is why his father appeared as a Stag in Harry's petronus.
Having the new broom delivered at the end of the movie instead of having it given to him right after his old one is destroyed was ridiculous. They should have included the fact that he was not allowed to ride it at all because the teachers were afraid it may be cursed. They pretty much neglected the whole Quidditch aspect that all the stories build on.
These are things that have to be explained before moving on to the next movie and they did not do a thing about it. I looked for these things on the DVD with hopes that they just shaved them to save time, but sadly it was not addressed there either. All in all I hope they do better with the next movie or I will shun them all together and stick with the novels. If they can't get the basics right they should not make the movie at all.