“Not much, Mr. Holmes, among the millions of London.”

“Perhaps not. That is why I thought it best to summon this lady to your aid.”

We all turned round at the words. There, framed in the doorway, was a tall and beautiful woman⁠—the mysterious lodger of Bloomsbury. Slowly she advanced, her face pale and drawn with a frightful apprehension, her eyes fixed and staring, her terrified gaze riveted upon the dark figure on the floor.