The film was very entertaining to watch, and the acting was well done throughout, especially the performance by Tom Felton. The problem is, The Half-Blood Prince, as the book was written, is supposed to set up The Deathly Hallows. This was not done at all. They took far too many liberties changing the book. For example: no battle scene at Hogwarts Then they added a scene (not in the book) where death eaters burn down the burrow, and it is never really developed or explained. It is completely random. It was a dark book meant to set up the 7th installment, turned into a romantic comedy.