"Where is it? What is it? Why in the world didn't you tell me in the first place?" exclaimed Narkom irritably, as he glanced round the place searchingly. "Is it a panel? a secret door? or what? This is an old house, and old houses are sometimes a very nest of such things."
"Happily, this one isn't. It's a modern innovation, not an ancient relic, that offers the means of entrance in this case. A Yankee occupied this house before I bought it from him, one of those blessed shivery individuals his country breeds, who can't stand a breath of cold air indoors after the passing of the autumn. The wretched man put one of those wretched American inflictions, a hot-air furnace, in the cellar, with huge pipes running to every room in the house, great tin monstrosities bigger round than a man's body, ending in openings in the wall, with what they call 'registers' to let the heat in or shut it out as they please. I didn't have the wretched contrivance removed or those blessed 'registers' plastered up. I simply had them papered over when the rooms were done up (there's one over there near that settee), and if a man got into this house, he could get into that furnace thing and hide in one of those flues until he got ready to crawl up it as easily as not. It struck me that perhaps it would be as well for you to examine that furnace and those flues before matters go any further."
"Of course it would. Great Scott! Sir Horace, why didn't you think to tell me of this thing before?" said Narkom excitedly. "The fellow may be in it at this minute. Come, show me the wretched thing."
"It's in the cellar. We shall have to go down the kitchen stairs, and I haven't a light."
"Here's one," said Petrie, unhitching a bull's-eye from his belt and putting it into Narkom's hand. "Better go with Sir Horace at once, sir. Leave the door of the gallery open and the light on. Fish and me will stand guard over the stuff till you come back, so in case the man is in one of them flues and tries to bolt out at this end, we can nab him before he can get to the windows."
"A good idea," commented Narkom. "Come on, Sir Horace. Is this the way?"
"Yes, but you'll have to tread carefully, and mind you don't fall over anything. A good deal of my paraphernalia--bottles, retorts, and the like--is stored in the little recess at the foot of the staircase, and my assistant is careless and leaves things lying about."