Stocazzo!

Chapter 10
Harry, Ron and Hermione decide that the heir is probably Draco Malfoy. To try to prove it, Hermione proposes to use Polyjuice Potion, which can change a person into somebody else for anhour. After getting Lockhart's signature to check out the book Moste Potente Potions from the Restricted Section that has the recipe, Hermione warns them that the potion will take a month to brew,supposing they gather all the necessary ingredients (two of which can only be found in Snape's private inventory). Since no one comes into Moaning Myrtles' bathroom, the three of them decide it is thebest place to brew the potion unnoticed. Hermione begins working with the ingredients they have.
During the month that it takes the Polyjuice Potion to brew, a Quidditch matchbetween Gryffindor and Slytherin takes place. During the match, one of the Bludger stakes after Harry and focuses completely on him. SinceBludgers are supposed to attack each and every player, the crowd immediately realizesthat this Bludger has been tampered with. Harry still manages to catch the Golden Snitch and allow for Gryffindor to win thanks to the Slytherin Seeker Draco Malfoy wasting his time towards insultingHarry and not paying attention to his surroundings where the Snitch was hovering slightly above his left ear. However, prior to catching the Snitch, the Bludger broke Harry's arm, and Lockhart,attempting to fix it, gets rid of all the bones in his arm instead. Madam Pomfrey gives Harry Skele-Gro potion to counter this and Harry is forced to stay in the Hospital wing overnight.
During thatnight, Dobby visits Harry and reveals that it was he who made the Bludger chase after Harry, and was also responsible for the barrier of Platform Nine and Three-Quarters not letting him in for in hopesof Harry leaving or never arriving at Hogwarts. He also reveals that the Chamber of Secrets has been opened before and immediately punishes himself, as he is not supposed to reveal anything....