“Any delay in arresting the assassin,” I observed, “might give him time to perpetrate some fresh atrocity.”

Thus pressed by us all, Holmes showed signs of irresolution. He continued to walk up and down the room with his head sunk on his chest and his brows drawn down, as was his habit when lost in thought.

“There will be no more murders,” he said at last, stopping abruptly and facing us. “You can put that consideration out of the question. You have asked me if I know the name of the assassin. I do. The mere knowing of his name is a small thing, however, compared with the power of laying our hands upon him. This I expect very shortly to do. I have good hopes of managing it through my own arrangements; but it is a thing which needs delicate handling, for we have a shrewd and desperate man to deal with, who is supported, as I have had occasion to prove, by another who is as clever as himself. As long as this man has no idea that anyone can have a clue there is some chance of securing him; but if he had the slightest suspicion, he would change his name, and vanish in an instant among the four million inhabitants of this great city. Without meaning to hurt either of your feelings, I am bound to say that I consider these men to be more than a match for the official force, and that is why I have not asked your assistance. If I fail I shall, of course, incur all the blame due to this omission; but that I am prepared for. At present I am ready to promise that the instant that I can communicate with you without endangering my own combinations, I shall do so.”

Gregson and Lestrade seemed to be far from satisfied by this assurance, or by the depreciating allusion to the detective police. The former had flushed up to the roots of his flaxen hair, while the other’s beady eyes glistened with curiosity and resentment. Neither of them had time to speak, however, before there was a tap at the door, and the spokesman of the street Arabs, young Wiggins, introduced his insignificant and unsavoury person.

“Please, sir,” he said, touching his forelock, “I have the cab downstairs.”

“Good boy,” said Holmes, blandly. “Why don’t you introduce this pattern at Scotland Yard?” he continued, taking a pair of steel handcuffs from a drawer. “See how beautifully the spring works. They fasten in an instant.”

“The old pattern is good enough,” remarked Lestrade, “if we can only find the man to put them on.”

“Very good, very good,” said Holmes, smiling. “The cabman may as well help me with my boxes. Just ask him to step up, Wiggins.”

I was surprised to find my companion speaking as though he were about to set out on a journey, since he had not said anything to me about it. There was a small portmanteau in the room, and this he pulled out and began to strap. He was busily engaged at it when the cabman entered the room.