By J.K. Rowling
For twelve lengthy years, the dread citadel of Azkaban held an notorious prisoner named Sirius Black. Convicted of killing 13 individuals with a unmarried curse, he used to be acknowledged to be the inheritor obvious to the darkish Lord, Voldemort.
Now he has escaped, leaving in simple terms clues as to the place he could be headed: Harry Potter's defeat of You-Know-Who was once Black's downfall besides. And the Azkban guards heard Black muttering in his sleep, "He's at Hogwarts...he's at Hogwarts."
Harry Potter isn't really secure, no longer even in the partitions of his magical college, surrounded by way of his associates. simply because on most sensible of all of it, there could be a traitor in their midst.