Harry Potter and the Prisoner of Azkaban
By J. K. RowlingHarry Potter and the Prisoner of Azkaban marks a distinct shift in tone and complexity from the first two books in the series. Harry returns for his third year at Hogwarts, only to learn that a notorious criminal, Sirius Black, has escaped from the wizarding prison, Azkaban. Rumors swirl that Sirius is out to kill Harry, adding an air of danger to the school year.