The shriek, I said, was my own in a dream. The old man, I mentioned, was absent in the country. I took my visitors all
over the house. I bade them search=search well. I led
them, at length, to his chamber. I showed them his
treasures, secure, undisturbed. In the enthusiasm of my
confidence, I brought chairs into the room, and desired
them here to rest from their fatigues, while I myself, in the
wild audacity of my perfect triumph, placed my own seat
upon the very spot beneath which reposed the corpse of
the victim. The officers were satisfied. My manner had
convinced them. I was singularly at ease. What are the four context clues