"Suppose, for instance, Luke ventured outside through the passageway, if so be we can hit upon a plan of preventing the end of the tunnel from being seen on the surface. Now then, it should not be a very difficult job for us to rig up a dummy which would have somewhat the appearance of a lad lying on the bed as if asleep. Then we will say that you, Harvey, lie down beside the figure, pretending to be asleep. Master Lord comes; finds Archie and me sitting here at the table; glances at the bed, sees Harvey's face, and also what appears to be Luke's head. Think you he would have any suspicion that matters were wrong?" "But suppose he did?" I insisted, determined to understand all the possibilities of Hiram's scheme; but not allowing that it might be put through successfully. "Well, we will suppose his suspicions are aroused, and he goes over to the bed to make certain Luke is there. How much worse off are we in case he discovers the trick? We know him to be our enemy, regardless of the confidence which our people may put in him, and it is also a fact that we are bound to keep our eyes open for the first move he shall make, because the end of this matter, from his point of view, is our capture by the Britishers when the time comes that all his purposes are served." "Well, what then?" I demanded impatiently. "Once he has made the discovery that I am outside, can you prevent him raising an alarm, and thus bringing the lobster backs upon those who are inside?" "Aye, that seems to me a very simple matter," Hiram replied. "The moment our double-faced friend went toward the dummy to make certain he had been tricked, our plan would be to fall upon him, and I'll eat my head if the three of us can't truss him up like a fowl ready for the roasting, however much of a fight he may make." "Well, and if we have him prisoner, what then?"