Harry is released from the infirmary and finds Ron and Hermione in Moaning Myrtle's bathroom working on the potion, which is only half finished. Fear is sweeping the school, and people are buying protective amulets and charms. Harry, Ron, and Hermione decide to stay at school over the holidays because Draco Malfoy is staying. But first they need the remaining ingredients, so Harry creates a diversion in Potions class by making Draco's friend Goyle's potion explode while Hermione slipped into the storeroom and took the rest of the needed ingredients. They sign up for a Dueling Club, taught by Lockhart and Snape. Harry and Malfoy are partnered, and in a demonstration in front of the group, Malfoy sets a snake on Harry, which is in danger of attacking Justin Finch-Fletchley. Harry uses his talent for talking to snakes and tells it to stop. Everyone is shocked that he is a Parcelmouth, and they are afraid of him, because Slytherin was a Parcelmouth. Harry overhears a group of students in the library who suspect he is the Dark Wizard. As he storms off to find Justin and explain what really happened with the snake, he runs into a Petrified Justin and Nearly Headless Nick on the stairs. Peeves the Poltergeist, another ghost who lives in the castle, comes across them and yells the alarm. As everyone rushes to the victims, it appears that Harry is caught in the act. McGonagall takes him up a spiral staircase to a special section of the castle where Dumbledore lives.