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Harry Potter discovers a book that reveals Lord Voldemort's dark past at Hogwarts.
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As Harry Potter (Daniel Radcliffe) begins his sixth year at Hogwarts, he discovers an old book marked as "the property of the Half-Blood Prince" and begins to learn more about Lord Voldemort's (Ralph Fiennes') dark past.
"Last movie before the double conclusion of the saga, 'Harry Potter and the Half-Blood Prince' is a peek over the shoulder into Hogwarts' and Voldemort's past. Instead of moving forward, David Yates uses the film as a point of observation of the past. It is here that Harry and Dumbledore draw closer and begin to investigate Lord Voldemort's past more deeply. Furthermore, it is worth noting that it is one of the least faithful films to Rowling's books, with several passages suppressed and others transformed -- many fans, by the way, still haven't forgiven the subway flirting. However, it is the film that gives the most layers to Professor Snape's character and has a sad and melancholic ending that should leave any fan in awe."