Third instalment in the phenomenally successful harry potter series harry daniel radcliffe ron rupert grint and hermione emma watson have returned to hogwarts for their third year but there is a shadow hanging over harry dangerous serial killer sirius black gary oldman has escaped from the wizards prison the azkaban fortress and he wants revenge for the death of his master voldemort who harry defeated 13 years earlier for harrys protection azkaban has sent an army of soul sucking dem