Harry Potter and the Half-Blood Prince is the sixth movie in the Harry Potter series and talks about Harry's sixth year at Hogwarts. During the school year, Harry works with Dumbledore to learn about ways to stop Voldemort, as it becomes clearer that he is not leaving any time soon. They soon get help from an old teacher who taught Tom Riddle, himself. 

 They soon learn that Tom used more powerful dark magic than Dumbledore had ever expected, and that defeating him will be more difficult than ever. The ending of this movie is epic, and could not have been done better. This is one of the most thrilling movies in the whole series, and is filled with suspense.