We had reached Pall Mall as we talked, and were walking down it from the St. James’s end. Sherlock Holmes stopped at a door some little distance from the Carlton, and, cautioning me not to speak, he led the way into the hall. Through the glass paneling I caught a glimpse of a large and luxurious room, in which a considerable number of men were sitting about and reading papers, each in his own little nook. Holmes showed me into a small chamber which looked out into Pall Mall, and then, leaving me for a minute, he came back with a companion whom I knew could only be his brother.

Mycroft Holmes was a much larger and stouter man than Sherlock. His body was absolutely corpulent, but his face, though massive, had preserved something of the sharpness of expression which was so remarkable in that of his brother. His eyes, which were of a peculiarly light, watery gray, seemed to always retain that faraway, introspective look which I had only observed in Sherlock’s when he was exerting his full powers.