Harry Potter and the Prisoner of Azkaban .

Harry Potter and the Prisoner of Azkaban study guide contains a biography of J.K. Rowling, literature essays, quiz questions, major themes, characters, and a full summary and analysis.

Hogwarts School of Witchcraft and Wizardry aka Hogwarts Castle

So much for racial diversity. The Harry Potter movies are nothing if not formulaic (the first two, and , are directed by this one's producer, Chris Columbus), and so this minor adventure leads more or less directly to the train ride to Hogwarts, accompanied by pals Ron (Rupert Grint, who seems progressively more reduced to "comic relief") and Hermione (the increasingly self-assured and quite lovely Emma Watson). On learning that he's in grave danger from a recently escaped prisoner, Sirius Black (Gary Oldman, with not nearly enough to do), convicted and insane murderer of his parents, Harry rather takes it in stride. There's always someone plotting to do away with him.

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And then Harry meets a Dementor, one of the soul-sucking, grimly wraithy, aggressively floaty guards assigned to look after the prison, Azkaban, from which Sirius has escaped. The very fact of that escape intimates that, for all their creepiness (mostly borrowed from the ' ringwraiths), these creatures don't have much control over humans with a mind to get over on them. Still, Harry's duly disturbed by the cheesy "sucking" effects they wreak on his face, and ready to accept help from a newbie instructor at Hogwarts, the obviously named Professor Lupin (David Thewlis).