Hello! I would say the narrator is insane because he can still hear the old man’s heart thumping from underneath the floorboards even after he killed him. His guilt gets the better of him and he turns himself in to the cops. I don’t have any evidence sense I don’t have the story on me, but use something from the story along the lines where he “hears” the thumping of his heart as evidence.
I think the king ending is affective in a way
The personification is: “deathly oppressive silence hangs over the house and clings to me as if it were going to drag me into the deepest regions of the underworld”
The extended metaphor is the line from “I wonder from room to room” to “a voice within me cries”, so the last 7 lines (sorry I didn’t feel like writing the quote out).
Anne is forced to stay in the house/attic every day to avoid being discovered. The attic itself is cramped and stuffy, especially with the 8 other people living there. She feels like a caged animal (a caged songbird in this case) because she is never allowed into the outside world.
