Harry Potter and the Prisoner of Azkaban

In the third book in the series, Harry must figure out who the murderer Sirius Black is. He also learns of the mysterious Maurderer's Map, an ancient map that shows the wherabouts of people. Harry eventually learns who his godfather was, and must go back in time to save him from the clutches of his dad's betrayer friend, Peter Petriggrew.

Rating: 9/10 :)