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 11 million units in the first twenty-four hours of release. The series has also gathered adult fans, leading to the release of two editions of each "Harry Potter" book, identical in text but with one edition's cover artwork aimed at children and the other aimed at adults. Besides meeting online through blogs, podcasts, and fansites, "Harry Potter" super-fans can also meet at "Harry Potter" symposia. The word "Muggle" has spread beyond its "Harry Potter" origins, becoming one of few pop culture words to land in the Oxford English Dictionary. The Harry Potter fandom has embraced podcasts as a regular, often