In the climax of the story the neighbor kills the old man on the eighth night. He killed the old man by suffocating him with the bed and then chopping off his arms, legs, and head. He kills him because he hated the old man's eye. "The one eye looked like the eye of a vulture. It was a pale blue eye with a film over it. Whenever it looked at me, my blood ran cold."
In the falling action of the story the police officers come to the house to search because a different neighbor heard screams. The officers came to the home and sat down for a while. "I was so confident that I brought chairs into the room and asked them to sit down." The falling action occurs after the climax and the shows the conflict has been resolved.
In the resolution the neighbor confesses to killing the old man because he felt guilty and he kept hearing the old man's heart beating in his head. "Enough! I admit the deed! Tear up the planks! Here, here! It is the beating of his hideous heart!" The cops probably arrest him at this point. Resolution is the outcome of the conflict in the story.