It was a half-length, in officer's uniform; one hand holding the hilt of a sword against the breast, while the forefinger of the other hand pointed diagonally downward, as much as to say, "I vanished in that direction!" The fireplace, it should be noted, was built on the side of the room opposite to the windows; that is to say, in one of the partition walls. And what was on the other side of this partition? Not the large chamber opening into the corridor--that lay at right angles to the east chamber, along the southern front of the wing. Not the corridor either, though it ran for some distance parallel to the east chamber, and had a door on the east side. But this door led into a great dark closet, as big as an ordinary room, and used as a receptacle for rubbish. Was it the dark closet, then, that adjoined the east chamber on the other side of the partition? No, once more. Had a window been opened through the closet wall, it would have looked--not into Archibald's room, but--into a narrow blind court or well, entirely enclosed between four stone walls, and of no apparent use, save as a somewhat clumsy architectural expedient. There was no present way of getting into this well, or even of looking into it, unless one had been at the pains to mount on the roof of the house and peer down. As a matter of fact, its existence was only made known by the reports of an occasional workman engaged in renewing the tiles, or mending a decayed chimney. An accurate survey of the building would, of course, have revealed it at once; but nothing of the kind had been thought of within the memory of man. Such a survey would also have revealed what no one in the least suspected, but which was, nevertheless, a fact of startling significance--namely, that the blind court was, at least, fifteen feet shorter, and twenty-five feet narrower, _than it ought to have been_!