Harry Potter and the Prisoner of Azkaban

Harry, Ron and Hermione return as teenagers for a third term at Hogwarts School of Witchcraft and Wizardry. But Harry's fate, and that of the entire community of wizards, looks bleak when the infamous Sirius Black--convicted of abetting evil Lord Voldemort by killing 13 people with a single curse--escapes from prison. The only clue to where Sirius is headed: The Azkaban guards heard Black mutte...