Not long after arriving at Hogwarts, Brian had learned one thing early on-the ancient castle of Hogwarts concealed countless secrets. They might be hidden in the first patch of ceiling you saw when you opened your eyes each day, or beneath the floor tiles you stood on while washing, and until you had the clues, those secrets would never speak of their own accord.
But the house-elves of Hogwarts could speak, and not only could they speak, they were everywhere, warmhearted, and utterly open with wizards they trusted-as Hogwarts Headmaster, Dumbledore had, of course, earned the trust and affection of every house-elf.
According to Dumbledore, he had found Ravenclaw's Diadem so easily entirely thanks to a Hogwarts house-elf named Bingo, who was nearing retirement but was observant and good at keeping a diary. ("Brian: Does Bingo often curl up inside pumpkins, with a quill tucked behind his ear?" "Dumbledore: Yes, precisely the Bingo you're thinking of.")
It had been an early morning after Dumbledore stayed up late working. He was sitting up groggily in bed, wearing a nightcap, when the elderly Bingo, who had not slept all night and had enormous dark circles under his eyes, brought him good news-"Good morning, Professor Dumbledore! Sorry for the trouble. You see, I've noticed recently that you've been busy collecting objects connected to He-Who-Must-Not-Be-Named-so last night, Bingo specially opened the chest where I keep my diaries, found my records from the past twenty-odd years, and read through them twice in one go! If I wasn't letting my mind wander while writing my diary back then, You-Know-Who should have hidden something important in the Room of Requirement. Hmm, he seemed to trust that room a great deal, but actually, lots and lots of people like hiding things there-haha,
"I've put plenty of things in