“It is masterly,” said the Inspector, in an awed voice.
“There being no fear of interruption I proceeded to burgle the house. Burglary has always been an alternative profession, had I cared to adopt it, and I have little doubt that I should have come to the front. Observe what I found. You see the gas-pipe along the skirting here. Very good. It rises in the angle of the wall, and there is a tap here in the corner. The pipe runs out into the strong-room, as you can see, and ends in that plaster rose in the centre of the ceiling, where it is concealed by the ornamentation. That end is wide open. At any moment by turning the outside tap the room could be flooded with gas. With door and shutter closed and the tap full on I would not give two minutes of conscious sensation to anyone shut up in that little chamber. By what devilish device he decoyed them there I do not know, but once inside the door they were at his mercy.”
The Inspector examined the pipe with interest. “One of our officers mentioned the smell of gas,” said he, “but, of course, the window and door were open then, and the paint—or some of it—was already about. He had begun the work of painting the day before, according to his story. But what next, Mr. Holmes?”
“Well, then came an incident which was rather unexpected to myself. I was slipping through the pantry window in the early dawn when I felt a hand inside my collar, and a voice said: ‘Now, you rascal, what are you doing in there?’ When I could twist my head round I looked into the tinted spectacles of my friend and rival, Mr. Barker. It was a curious forgathering,
