I loved the old man. He had never wronged me. He had never given me insult. For his gold I had no desire. I think it was his eye! yes, it was this (Poe 2).
And then when my head was well in the room I undid the lantern cautiously-oh, so cautiously- cautiously (for the hinges creaked) I undid it so much that a single think ray fell upon the vulture's eye (Poe 3)
All in vain; because Death, in approaching him, had stalked with his black shadow before him and enveloped the victim (Poe 7)
" It is nothing but the wind in the chimney—it is only a mouse crossing the floor," or, "It is merely a cricket which has made a single chirp" (poe 7).
In this scene the narrator encounters the old man and as he sees the old man and has no desire for what the old man has or does it's just the old man's eye that made the narrator unsettled, as he speaks to himself.
The old man's hour had come! With a loud yell, I threw open the lantern and leaped into the room. He shrieked once—once only. In an instant I dragged him to the floor, and pulled the heavy bed over him (Poe 11).
In every night the narrator has the idea to sneak into the old man's house while he was sleeping and gaze at him up into the day he sees the old man's vulture eye. So as he waits he stares at the old man quietly.
I heard a loud shriek
Upon the eight nights that passed is awakening by the narrator and so the old man makes supposition to not be scared but the narrator knows that death is staring at him, soon the old man will be dead. The old man staying awake from his fear of robbers.
Villains!” I shrieked, “dissemble no more! I admit the deed!— tear up the planks!—here, here!—it ist he beating of his hideous heart (Poe 20).
The narrator finally sees the old man's eye open so then it angers him. Shortly after the narrator drags the bed over the old man to suffocate him. As the old man screams seeing that the narrator is about to murder him.
"A shriek had been heard by a neighbor during the night; suspicion of foul play had been aroused; information had been lodged at the police office, and they (the officers) had been deputed to search the premises" (Poe 16). In this scene the old man's neighbor is suspicious so then she requests the police to inspect the house.
The day the cops inspected the premises they talk to the narrator as the narrator talks to them he gets more anxious. So he finally goes insane and burts out where the old man is and confessed he killed the old man as well.