The theme of The Tell-Tale Heart is to not commit a crime because your guilty conscience may expose you. I say this because, in paragraph 18, it states, " Villains!" I shrieked, "dissemble no more! I admit the deed!- tear up the planks! -here, here!- it is the beating of his hideous heart!" This shows that the man was insane, and he confessed to the police that he killed the old man.
I hate that man's eye, I need to kill him.
The man had a disease. He was mentally insane.
The old man's eye was bugging him.
The man sneaks into the old man's room.
I killed the man.
The man kills the old man.
The cops come to the house to search it because someone told them they heard a loud shriek.
The man convinces the officers that he killed the old man.