"I know about the three-headed dog in the third floor corridor. I know that Professor Dumbledore is hiding something in there that belongs to Nicholas Flamel. While I don’t know what it is, Ron and Hermione suggested that you are going to steal it. I know you weren’t but then they kept on saying the same thing, so I think I lashed out at them, using accidental magic. Also, for a moment, I heard this voice in my head, telling me that you were bad."