Holmes had picked up the powerful air-gun from the floor and was examining its mechanism.
"An admirable and unique weapon," said he, "noiseless and of tremendous power. I knew Von Herder, the blind German mechanic, who constructed it to the order of the late Professor Moriarty. For years I have been aware of its existence, though I have never before had the opportunity of handling it. I commend it very specially to your attention, Lestrade, and also the bullets which fit it."
"You can trust us to look after that, Mr. Holmes," said Lestrade, as the whole party moved towards the door. "Anything further to say?"
"Only to ask what charge you intend to prefer?"
"What charge, sir? Why, of course, the attempted murder of Mr. Sherlock Holmes."
"Not so, Lestrade. I do not propose to appear in the matter at all. To you, and to you only, belongs the credit of the remarkable arrest which you have effected. Yes, Lestrade, I congratulate you! With your usual happy mixture of cunning and audacity you have got him."
"Got him! Got whom, Mr. Holmes?"
"The man that the whole force has been seeking in vain -- Colonel Sebastian Moran, who shot the Honourable Ronald Adair with an expanding bullet from an air-gun through the open window of the second-floor front of No. 427, Park Lane, upon the 30th of last month. That's the charge, Lestrade. And now, Watson, if you can endure the draught from a broken window, I think that half an hour in my study over a cigar may afford you some profitable amusement."
Our old chambers had been left unchanged through the supervision of Mycroft Holmes and the immediate care of Mrs. Hudson. As I entered I saw, it is true, an unwonted tidiness, but the old landmarks were all in their place. There were the chemical corner and the acid-stained, deal-topped table. There upon a shelf was the row of formidable scrap-books and books of reference which many of our fellow-citizens would have been so glad to burn. The diagrams, the violin-case, and the pipe-rack -- even the Persian slipper which contained the tobacco -- all met my eyes as I glanced round me. There were two occupants of the room -- one Mrs. Hudson, who beamed upon us both as we entered; the other the strange dummy which had played so important a part in the evening's adventures. It was a wax-coloured model of my friend, so admirably done that it was a perfect facsimile. It stood on a small pedestal table with an old dressing-gown of Holmes's so draped round it that the illusion from the street was absolutely perfect.
"I hope you preserved all precautions, Mrs. Hudson?" said Holmes.
"I went to it on my knees, sir, just as you told me."
"Excellent. You carried the thing out very well. Did you observe where the bullet went?"
"Yes, sir. I'm afraid it has spoilt your beautiful bust, for it passed right through the head and flattened itself on the wall. I picked it up from the carpet. Here it is!"
Holmes held it out to me. "A soft revolver bullet, as you perceive, Watson. There's genius in that, for who would expect to find such a thing fired from an air-gun. All right, Mrs. Hudson, I am much obliged for your assistance. And now, Watson, let me see you in your old seat once more, for there are several points which I should like to discuss with you."
He had thrown off the seedy frock-coat, and now he was the Holmes of old in the mouse-coloured dressing-gown which he took from his effigy.