Harry Potter and the Prisoner of Azkaban Harry Potter and the Prisoner of Azkaban Harry Potter and the Prisoner of Azkaban is a fantasy novel written by British author J. K. Rowling and the third in the "Harry Potter" series. The book follows Harry Potter, a young wizard, in his third year at Hogwarts School of Witchcraft and Wizardry. Along with friends Ronald Weasley and Hermione Granger, Harry investigates Sirius Black, an escaped prisoner from Azkaban who they believe is one of Lord Voldemort's old allies. The book was published in the United Kingdom on 8 July 1999 by Bloomsbury and in the United States on 8
Harry Potter and the Deathly Hallows the UK on 8 July 1999, and in the US on 8 September 1999. "Harry Potter and the Goblet of Fire" was published on 8 July 2000 at the same time by Bloomsbury and Scholastic. "Harry Potter and the Order of the Phoenix" is the longest book in the series at 766 pages in the UK version and 870 pages in the US version. It was published worldwide in English on 21 June 2003. "Harry Potter and the Half-Blood Prince" was published on 16 July 2005, and it sold 9 million copies in the first 24 hours of its worldwide