Harry Potter and the Prisoner of Azkaban. Rowling J.K.

For twelve long years, the dreaded fortress of Azkaban held an infamous prisoner named Sirius Black. Convicted of killing thirteen people with a single curse, he was said to be a dedicated follower of the Dark Lord, Voldemort. Now he's escaped. And the Azkaban guards heard Black muttering in his sleep, "He's at Hogwarts... he's at Hogwarts." Is he coming for Harry? Harry Potter isn't safe, not eve...