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Once the three students calm down enough to listen, Lupin and Black explain everything. Lupin is a werewolf who remains tame through a special steaming potion made for him by Snape. While Lupin was a student at Hogwarts, his best friends, James Potter, Sirius Black, and Peter Pettigrew, became animagi (humans able to take on animal forms) so that they could romp the grounds with Lupin at the full moon. They explain how Snape once followed Lupin toward his transformation site in a practical joke set up by Sirius, and was rescued narrowly by James Potter. At this moment, Snape reveals himself from underneath Harry's dropped invisibility cloak, but Harry, Ron, and Hermione disarm him, rendering him unconscious. Lupin and Black then explain that the real murderer of Harry's parents is not Black, but Peter Pettigrew, who has been presumed dead but really hidden all these years disguised as Scabbers. Lupin transforms Scabbers into Pettigrew, who squeals and hedges but ultimately confesses, revealing himself to be Voldemort's servant, and Black to be innocent. They all travel back to Hogwarts, but at the sight of the full moon, Lupin, who has forgotten to take his controlling tonic (the steaming liquid), turns into a werewolf. Sirius Black responds by turning into the large black dog in order to protect Harry, Ron, and Hermione from Lupin. As Black returns from driving the werewolf into the woods, a swarm of Dementors approaches, and Black is paralyzed with fear. One of the Dementors prepares to suck the soul out of Harry, whose patronus charm is simply not strong enough. Out of somewhere comes a patronus that drives the Dementors away. Harry faints.
Harry awakens in the hospital wing to hear Snape and Cornelius Fudge discussing the fact that Sirius Black is about to be given the fatal Dementor's Kiss. Harry and Hermione protest, claiming Black's innocence, but to no avail; then Dumbledore enters the room, shoos out the others, and mysteriously suggests that Harry and Hermione travel back through Hermione's time-turning device, and save both Black and Buckbeak. Hermione turns her hour-glass necklace back three turns, and Harry and Hermione are thrust into the past, where they rescue Buckbeak shortly before his execution. From a hiding place in the forest, Harry watches the Dementor sequence and discovers that he had been the one who conjured the patronus, and he is touched and confused to note that his patronus had taken the shape of a stag that he recognizes instantly as Prongs, his father's animagi form. After saving his past self from the Dementors, Harry and Hermione fly to the tower where Black is imprisoned, and they rescue Black, sending him away to freedom on Buckbeak's back. The next day, Harry is saddened to learn that Professor Lupin is leaving Hogwarts because of the previous night's scare. Dumbledore meets with Harry and gives him wise fatherly advice on the events that have happened. On the train ride home, Harry receives an owl- post letter from Sirius that contains a Hogsmeade permission letter, words of confirmation that he is safe in hiding with Buckbeak and that he was, in fact, the sender of the Firebolt, and a small pet owl for Ron. Harry feels slightly uplifted as he returns to spend his summer with the Dursleys. |
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