Azkaban follows Harry to his third year at the Hogwarts School of Witchcraft and Wizardry. The book served as something of a turning point in the series, foreshadowing the dark events portrayed in the following two books, 'Goblet of Fire' and 'Order of the Phoenix'. A convicted murderer, Sirius Black, has escaped from the wizard's prison of Azkaban. His escape presents a problem for Harry since it is believed that Black played a role in the murder of Harry's parents and is out to finish the job. Of course, things turn out to be much, much deeper than they appear and will alter Harry's world dramatically. If previous games are any indication, fans can expect the game to follow the events of the book more closely than that of the movie.