Poe goes mad and confesses the murder to the cops.
I did it I did it you fools stop laughing I murdered the man he's under these very boards!
The man was scared because he had heard a thud, and a light was shining on his eye. He made a moan of mortal terror
The man had already died and now Poe was taking care off buisness and now was cutting off the limbs and the head.
Poe kept hearing a prompt beat and the cops where laughing, when he realized what it was it was the old man heart! It exploded inside of him he could take it anymore, and then he shouted at the top of his lungs.