"When the inspector and the detective had entered, I shut and locked the front door; then, while the inspector held the light, I sealed the door carefully, with tape and wax. At the head of the cellar stairs, I shut and locked that door also, and sealed it in the same way.
"Abruptly, the landlord, who was next to me, let out his breath with a little hissing sound; I knew then that something was visible to him. There came a creak from the table, and I had a feeling that the inspector was leaning forward, looking at something that I could not see. The landlord reached out his hand through the darkness, and fumbled a moment to catch my arm:--
"From the detective there came a sudden shout:--
"Captain Tobias was an observant man; he had seen how I had placed the mats against the doors; and after entering the rooms, and walking all about them, so as to leave the foot-marks of an old pair of wet woollen slippers everywhere, he had deliberately put the mats back as he found them.
"As I said before," answered Carnacki. "The side walls of the well did not reach to the bottom; so that you had only to dip down into the water, and come up again on the other side of the wall, under the cellar floor, and so climb into the passage. Of course, the water was the same height on both sides of the walls. Don't ask me who made the well entrance or the little stairway; for I don't know. The house was very old, as I have told you; and that sort of thing was useful in the old days."
"I have just come back from Sir Alfred Jarnock's place at Burtontree, in South Kent," he began, without removing his gaze from the fire. "Most extraordinary things have been happening down there lately and Mr. George Jarnock, the eldest son, wired to ask me to run over and see whether I could help to clear matters up a bit. I went.
"Now I have particularly called your attention to this because it is important in that it provides witnesses in a most fortunate manner at an extraordinary moment. You see, the Rector's turning to speak to Bellett had naturally caused both Sir Alfred Jarnock and his son to glance in the direction of the butler, and it was at this identical instant and whilst all three were looking at him, that the old butler was stabbed--there, full in the candlelight, before their eyes.
"This is a pretty accurate description of the peculiar old weapon that has had the curious and uncomfortable reputation of being able (either of its own accord or in the hand of something invisible) to strike murderously any enemy of the Jarnock family who may chance to enter the Chapel after nightfall. I may tell you here and now, that before I left, I had very good reason to put certain doubts behind me; for I tested the deadliness of the thing myself.