"Harry Potter is a very unusual boy. He can't wait to school after the Summer holidays! But that's not the only unusual thing about Harry: Harry's school is Hogwarts School of Witchcraft and Wizardry, and Harry is a wizard! But when Harry, along with his best friends Ron and Hermione, go back for their third year at Hogwarts, the atmosphere is tense. There's an escaped mass murderer on the loose, and the sinister prision guards of Azkaban have been called in to guard the school..."Book Jacket