But then came the fourth night. The temperature in the sitting room plummeted. The fire in the hearth turned a sickly, chemical green. Holmes finally turned.
The woman was no longer outside. She stood in the center of the room, translucent and shimmering like oil on water. She didn't scream or point to a wound. She simply held out a hand, and in her palm sat a sapphire that didn't exist—a stone so blue it seemed to swallow the light of the room. Sherlock ][ Believer
"Belief," she replied. Her voice sounded like the rustle of old parchment. But then came the fourth night
"To find a boy," Holmes said, his voice unusually soft. "It seems my education is finally beginning." Holmes finally turned
She vanished. The room warmed instantly. On the floor, where she had stood, lay a single, very real scrap of paper. Holmes picked it up with trembling fingers. It wasn't a clue for a murder or a heist. It was a name and an address of a woman in East End whose son had gone missing—a case Holmes had dismissed as a "common runaway" only that morning.
"I do not believe in you," Holmes said, though his eyes were wide.