For twelve years, the dreaded fortress of Azkaban held an infamous prisoner named Sirius Black. Convicted of killing thirteen people with a single curse, he is said to be the heir apparent to the Dark Lord, Voldemort. Now he has escaped, leaving only two clues as to where he might be headed: Harry Potter's defeat of You-Know-Who was Black's downfall as well. And the Azkaban guards hear Black muttering in his sleep, "He's at Hogwarts... he's at Hogwarts."
, junto con las obras complementarias del "Wizarding World". Saga Principal (Heptalogía) libros de harry potter en orden wiki full
Para los fanáticos que desean profundizar en el "lore" o trasfondo del universo (información recopilada exhaustivamente en las plataformas wiki de la comunidad), J.K. Rowling publicó varios libros breves con fines benéficos que existen físicamente dentro del propio mundo de la historia: For twelve years, the dreaded fortress of Azkaban
– Ambientado en 1993-1994.