PATHOLOGY

Detailed explanation-1: -The narrator emphasizes the careful calculation of the murder, attempting the perfect crime, complete with dismembering the body in the bathtub and hiding it under the floorboards. Ultimately, the narrator’s actions result in hearing a thumping sound, which the narrator interprets as the dead man’s beating heart.

Detailed explanation-2: -How does the narrator dispose of the body? He cut off the old man’s head, arms, and legs and then put it under the floor. Who arrives in the middle of the night, and why? The police showed up because the neighbor heard a shriek.