Dramatic Irony-"I bade them search --search well. I led them, at length, to his chamber... In the enthusiasm of my confidence, I brought chairs into the room, and desired them here to rest from...
Welp...No bodies here!
Nope definitely no dismembered corpses to be found.
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." In this scenario, we know that the narrator killed the old man, but the officers do not.