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

In Harry Potter and the Prisoner of Azkaban by J.K. Rowling, thirteen year old Harry is getting ready to start his third year at Hogwarts. Despite a bumpy end to the summer where he accidentally put a magic spell on his horrible uncle's equally horrible sister, Harry seems to be forgiven by the Ministry of Magic.

But when he finds out that Sirius Black, a convicted murderer has escaped from Azkaban, the infamous wizards' prison, he realizes that he needs to be careful. Sirius Black, after all, is the one convicted of helping to kill Harry's parents. And everyone is convinced that Sirius is after him! What is Harry going to do this year at Hogwarts? How will he be able to concentrate on his lessons when there's an insane murderer looking for him? And what will he do if he ever does come face to face with Sirius Black? Read the book and find out!