As he spoke there was the sharp sound of horses' hoofs and grating wheels against the curb followed by a sharp pull at the bell. Holmes whistled.

"A pair, by the sound," said he. "Yes," he continued, glancing out of the window. "A nice little brougham and a pair of beauties. A hundred and fifty guineas apiece. There's money in this case, Watson, if there is nothing else."

"I think I had better go, Holmes."

"Not a bit, doctor. Stay where you are. I am lost without my Boswell. And this promises to be interesting. It would be a pity to miss it."

"But your client—"

"Never mind him. I may want your help, and so may he. Here he comes. Sit down in that armchair, doctor, and give us your best attention."

A slow and heavy step, which had been heard upon the stairs and in the passage, paused immediately outside the door.

Then there was a loud and authoritative tap.

"Come in!" said Holmes.

A man entered who could hardly have been less than six feet six inches in height, with the chest and limbs of a Hercules. His dress was rich with a richness which would, in England, be looked upon as akin to bad taste. Heavy bands of astrakhan were slashed across the sleeves and front of his double-breasted coat, while the deep blue cloak which was thrown over his shoulders was lined with flame-colored silk, and secured at the neck with a brooch which consisted of a single flaming beryl. Boots which extended half-way up his calves, and which were trimmed at the tops with rich brown fur, completed the impression of barbaric opulence which was suggested by his whole appearance. He carried a broad-brimmed hat in his hand, while he wore across the upper part of his face, extending down past the cheek-bones, a black visard-mask, which he had apparently adjusted that very moment, for his hand was still raised to it as he entered. From the lower part of the face he appeared to be a man of strong character, with a thick, hanging lip, and a long, straight chin, suggestive of resolution pushed to the length of obstinacy.