Harry Potter and the Prisoner of Azkaban
Contrary to everything we've been led to believe, Sirius Black (Gary Oldman), the escaped "Prisoner of Azkaban" of the title is not:
- a deranged mass-murderer, responsible for the deaths of several people 12 years prior.
- a practitioner of the Dark Arts who betrayed James and Lily Potter to Lord Voldemort, leading to their deaths.
- haunting the grounds of Hogwarts School of Witchcraft and Wizardry in order to get a chance to kill his Godson Harry (Daniel Radcliffe) and bring Voldemort back to power.
Sirius Black, however, is:
In the end, Black is able to prove his innocence to Harry, Ron, Hermione (Emma Watson) and the new Defense Against the Dark Arts teacher, Professor Lupin (David Thewlis). Together they capture Pettigrew, and though Black wants to kill Pettigrew, Harry convinces him to turn Pettigrew over to the Dementors. Snape (Alan Rickman) tries to interfere, but our heroes win out. Unfortunately, as the crew is bringing Pettigrew to justice, Lupin makes his monthly transformation into a werewolf. In the confusiuon, Pettigrew transforms into a rat again, and escapes. Black is then captured, and prepared to have his soul sucked out by the Dementors. Dumbledore (Michael Gambon) believes the kids' story, so he convinces Harry and Hermione to use Hermione's secret time-travel device (which she carries around in order to take multiple classes simultaneously) to liberate Black and the also-condemned-to-death Hippogryph, Buckbeak. Black makes good his escape, but is still a fugitive.
- the victim of a frame-up by the real killer, the long-presumed-dead Peter Pettigrew (Timothy Spall).
- incredibly guilt-ridden over the deaths of the Potters, because he gave Pettigrew the secret of the Potters' hiding place (which was promptly revealed to Voldemort)
- haunting the grounds of Hogwarts in order to kill Pettigrew, who has been hiding with the Weasley family, having transformed himeslf into Ron's (Rupert Grint's) pet rat, Scabbers.