This is the second book in the Harry Potter Series. It follows Harry, Ron and Hermione during their second year at Hogwarts. Harry keeps hearing a menacing voice in the school walls. Soon, several students are viciously attacked by a mysterious entity. Messages start appearing on the school walls, stating that the Chamber of Secrets has been opened and that pupils who do not come from pure magical families will be killed. Harry discovers that somebody has been opening the chamber and letting the monster out. We follow Harry and his friends as they investigate the attack and restore order at Hogwarts.