Harry Potter and the Prisoner of Azkaban is the third novel in J.K. Rowling's Harry Potter series. Harry learns that a prisoner known only as Black has escaped from Azkaban, a high security prison. Harry learns that "Black" was once a friend of his parents, though he was rumored to have betrayed them and gave Voldemort access to their house, where he killed Harry's parents. Harry must discover the true identity of Black and determine what role he will play in the ever approaching battle.
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