This document provides an analysis of the short story "The Tell-Tale Heart" by Edgar Allan Poe. It discusses the narrator's obsession with the old man's eye and increasing madness, as well as internal and external conflicts. Key evidence of the narrator's insanity is his fixation on the eye and belief that he hears the old man's heart beating, even after killing him. The document analyzes the psychological aspects of the narrator's madness and deterioration.