Harry knew the Grey Lady. He had learned about her within his first two months at Hogwarts.
After all, among Hogwarts' many ghosts, the Grey Lady was absurdly beautiful. Yes, Harry was a sucker for a pretty face. He had always known that, and he was proud of it rather than ashamed.
In fact, it was not just Harry. Almost all the young boys had learned the Grey Lady's name very early on.
However, the revelation that the Grey Lady was the ghost of the daughter of Rowena Ravenclaw, one of the Four Founders, left Harry utterly stunned.
Well, Harry was not the only one utterly stunned. Hermione was, too.
Yet although the Grey Lady looked gentle and serene, she was actually the least approachable ghost at Hogwarts. Even when Ravenclaw students spoke to her, she barely acknowledged them.
She was even harder to get along with than the frightening-looking Bloody Baron.
So, although they had learned from Sirius that she might know the whereabouts of Ravenclaw's diadem, neither Harry nor Hermione could think of a way to approach her and talk to her just yet.
Well, in fact, Harry and the others could not even find the Grey Lady most of the time. She appeared only at feasts, sitting quietly at the far end of the Ravenclaw Table.
Perhaps I could ask Qiu later. The Grey Lady might be in the Ravenclaw Common Room, Harry thought.
Sirius hoped Harry and the others could sound the Grey Lady out and see whether they could learn anything about the whereabouts of Ravenclaw's diadem. But it was really only a passing suggestion. Dumbledore and Lupin had held out no hope for it, either.
Although Sirius wanted to give it a try, he was not particularly invested. It was the classic attitude of