I understand the limits of book to movie translations; I don't understand why this movie seems like it doesn't aspire to be more than a place holder in the series. The movie summarizes the plot, but seems to focus on the development of the characters into almost adults. That part was WELL DONE, but it cost the other plot points and movement. Finally, the Slughorn character was too fearful, less ambitious, and more a fool than the book presented. A movie for those who already know the book. So I heartily recommend reading over passive watching, and seeing this movie as an EXTENSION of the book experience. (FYI saw with 18 children and they had much the same thoughts)