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 muttering in his sleep -"He's at Hogwarts ... He's at Hogwarts." Now, even within the walls of his magical school, Harry may not be safe from a convicted killer.