I will admit the deed was gruesome but in Poe's story telling he states the facts without the bloody details. Still you see them. This is how Poe describes the villain's actions- If you still think me mad, you will think so no longer when you when I describe the wise precautions I took for the concealment of the body. The night waned, and I worked hastily, but in silence. First of all I dismembered the corpse. I cut off the head and the arms and the legs.- You saw it didn't you. All the bloody details.
The villain had gotten away with murder. Even when the police came a calling. They had not a clue of his wise concealment. He invited them in. Played the gracious host. Touring them around the old man's room. Everything in place. His treasures secure and undisturbed. He was confident his deed was covert. So confident here's how he proceeded- 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. Nothing amiss. He had convinced them. But...his sharpened senses. The heart likened to the beating of a heart. Yes, Edgar Allen Poe is a Master Story Teller. I won't ruin the ending for you. You can read the complete story here.