I was nettled at the knowledge he displayed of my movements, and of my very thoughts; my old stubbornness asserted itself, and I was rude enough to say: "Perhaps it is as you say; at all events, I am obligated to keep an engagement, and with your permission will now retire." It was curious to mark the effect of this speech upon the intruder. He immediately became grave, reached quietly into an inner pocket of his coat, drew thence the same glittering, horrible, mysterious knife that had so terrified and bewildered me a year before, and looking me steadily in the eye, said coldly, yet with a certain tone of sadness: "Well, I will not grant permission. It is unpleasant to resort to this style of argument, but I do it to save time and controversy." I stepped back in terror, and reached for the old-fashioned bell-cord, with the heavy tassel at the end, that depended from the ceiling, and was on the point of grasping and giving it a vigorous pull. "Not so fast, if you please," he said, sternly, as he stepped forward, and gave the knife a rapid swish through the air above my head, causing the cord to fall in a tangle about my hand, cut cleanly, high above my reach! I gazed in dumb stupor at the rope about my hand, and raised my eyes to the remnant above. That was motionless; there was not the slightest perceptible vibration, such as would naturally be expected. I turned to look at my guest; he had resumed his seat, and had also regained his pleasant expression, but he still held the knife in his hand with his arm extended, at rest, upon the table, which stood upon his right. [Illustration: "THE SAME GLITTERING, MYSTERIOUS KNIFE."]