The thoughts of the old man's blind eye haunting the narrator begin to grow into thought of murder.
The narrator comes in and slowly but surly spy's on the old man for an hour every night at 12:00 A.M.
After continuously spying on the old man every night he saw the eye and decided to throw him on the ground and suffocate him by putting the mattress on top of him.
The old man has been hidden under the floor boards and his limbs have been cut off all because the narrator couldn't stand the haunting of his eye.
The narrator couldn't take the pressure of keeping the murder of the old man a secret so he confessed and turned himself in.
"I heard all things in the heaven and in the earth. I heard many things in hell." This quote shows that the narrator is unreliable because he is stating that he has been hearing things from heaven and hell. All because of the old man's eye that is angering him.