"You don't mean to say," I cried, in amazement, "that that tottering, feeble old woman was able to get out of the cab while it was in motion, without either you or the driver seeing her?"
"Old woman be damned!" said Sherlock Holmes, sharply. "We were the old women to be so taken in. It must have been a young man, and an active one, too, besides being an incomparable actor. The get-up was inimitable. He saw that he was followed, no doubt, and used this means of giving me the slip. It shows that the man we are after is not as lonely as I imagined he was, but has friends who are ready to risk something for him. Now, Doctor, you are looking done-up. Take my advice and turn in."
I was certainly feeling very weary, so I obeyed his injunction. I left Holmes seated in front of the smouldering fire, and long into the watches of the night I heard the low, melancholy wailings of his violin, and knew that he was still pondering over the strange problem which he had set himself to unravel.