"Not quite four years ago, a bearded old man stood up in the Great Hall of Hogwarts and said that we all should avoid the third-floor corridor on the right-hand side, because if we didn’t, we would "die a most painful death.’ Did his warning work? Was this part of the castle universally avoided?" Harry laughed. "I think every student in the school except for the Hufflepuffs wound up sneaking up there and opening the "locked’ door. It wouldn’t surprise me if the Twins had hit the place before eating breakfast the next morning."