who tells harry about the chamber of secrets
Harry Potter and the Chamber of Secrets Rumours fly around the school regarding the history of the Chamber of Secrets, and for Harry and his friends, the answer comes by way of Cuthbert Binns, the ghostly professor of History of Magic: The Chamber of Secrets, which houses a terrible monster, was created by one of the school’s founders, Salazar Slytherin, after a fundamental disagreement with the others (Godric Gryffindor, Helga Hufflepuff, and Rowena Ravenclaw), believing that students of non-magical parentage should be refused entry to the school. When a Bludger, one of the balls involved in Quidditch, chases after Harry instead of zigzagging toward any player it can hit, breaking his arm, Dobby returns in the middle of the night to visit Harry in the hospital wing, revealing that it was he who charmed the Bludger and sealed the gateway at King’s Cross and that the Chamber of Secrets had been opened before. Another attack occurs, this time to a first-year Gryffindor named Colin Creevey who idolises Harry, and the school enters panic mode, setting up a dueling class for the students (led by Lockhart and Potions master/Head of Slytherin House Severus Snape), during which it is revealed that Harry is a 'Parselmouth', meaning he has the rare gift to speak to snakes.