"Suddenly, I saw that the great fire was blackening. It was going out visibly, as I looked. If I said that some monstrous, invisible, impossible creature sucked the life from it, I could best explain the way the light and flame went out of it. It was most extraordinary to watch. In the time that I watched it, every vestige of fire was gone from it, and there was no light outside of the ring of candles around the Pentacle. "The deliberateness of the thing troubled me more than I can make clear to you. It conveyed to me such a sense of a calm Deliberate Force present in the hall: The steadfast intention to 'make a darkness' was horrible. The _extent_ of the Power to affect the Material was horrible. The extent of the Power to affect the Material was now the one constant, anxious questioning in my brain. You can understand? "Behind me, I heard the policemen moving again, and I knew that they were getting thoroughly frightened. I turned half 'round, and told them, quietly but plainly, that they were safe only so long as they stayed within the Pentacle, in the position in which I had put them. If they once broke, and went outside of the Barrier, no knowledge of mine could state the full extent of the dreadfulness of the danger. "I steadied them up, by this quiet, straight reminder; but if they had known, as I knew, that there is no certainty in any 'Protection,' they would have suffered a great deal more, and probably have broken the 'Defense,' and made a mad, foolish run for an impossible safety. "Another hour passed, after this, in an absolute quietness. I had a sense of awful strain and oppression, as though I were a little spirit in the company of some invisible, brooding monster of the unseen world, who, as yet, was scarcely conscious of us. I leant across to Wentworth, and asked him in a whisper whether he had a feeling as if something were in the room. He looked very pale, and his eyes kept always on the move. He glanced just once at me, and nodded; then stared away 'round the hall again. And when I came to think, I was doing the same thing. "Abruptly, as though a hundred unseen hands had snuffed them, every candle in the Barrier went dead out, and we were left in a darkness that seemed, for a little, absolute; for the light from the Pentacle was too weak and pale to penetrate far across the great hall. "I tell you, for a moment, I just sat there as though I had been frozen solid. I felt the 'creep' go all over me, and seem to stop in my brain. I felt all at once to be given a power of hearing that was far beyond the normal. I could hear my own heart thudding most extraordinarily loud. I began, however, to feel better, after a while; but I simply had not the pluck to move. You can understand?