We travelled by the Underground as far as Aldersgate; and a short walk took us to Saxe-Coburg Square, the scene of the singular story which we had listened to in the morning. It was a pokey, little, shabby-genteel place, where four lines of dingy two-storied brick houses looked out into a small railed-in enclosure, where a lawn of weedy grass and a few clumps of faded laurel-bushes made a hard fight against a smoke-laden and uncongenial atmosphere. Three gilt balls and a brown board with “JABEZ WILSON” in white letters, upon a corner house, announced the place where our red-headed client carried on his business. Sherlock Holmes stopped in front of it with his head on one side, and looked it all over, with his eyes shining brightly between puckered lids. Then he walked slowly up the street, and then down again to the corner, still looking keenly at the houses. Finally he returned to the pawnbroker’s, and, having thumped vigorously upon the pavement with his stick two or three times, he went up to the door and knocked. It was instantly opened by a bright-looking, clean-shaven young fellow, who asked him to step in. “Thank you,” said Holmes, “I only wished to ask you how you would go from here to the Strand.” “Third right, fourth left,” answered the assistant, promptly, closing the door. “Smart fellow, that,” observed Holmes, as we walked away. “He is, in my judgment, the fourth smartest man in London, and for daring I am not sure that he has not a claim to be third. I have known something of him before.” “Evidently,” said I, “Mr. Wilson’s assistant counts for a good deal in this mystery of the Red-headed League. I am sure that you inquired your way merely in order that you might see him.” “Not him.” “What then?” “The knees of his trousers.” “And what did you see?” “What I expected to see.” “Why did you beat the pavement?” “My dear doctor, this is a time for observation, not for talk. We are spies in an enemy’s country. We know something of Saxe-Coburg Square. Let us now explore the parts which lie behind it.” The road in which we found ourselves as we turned round the corner from the retired Saxe-Coburg Square presented as great a contrast to it as the front of a picture does to the back. It was one of the main arteries which convey the traffic of the city to the north and west. The roadway was blocked with the immense stream of commerce flowing in a double tide inward and outward, while the foot-paths were black with the hurrying swarm of pedestrians. It was difficult to realize as we looked at the line of fine shops and stately business premises that they really abutted on the other side upon the faded and stagnant square which we had just quitted.