Holmes had picked up the powerful airgun 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.”