In Edgar Allan Poe's "The Tell-Tale Heart," the police initially believe the narrator is calm and collected after he has committed murder. However, as the story progresses, they become suspicious of his erratic behavior and increasingly frantic demeanor. The narrator's overwhelming guilt manifests as the imagined sound of the beating heart, ultimately leading him to confess to the crime. Thus, while they may not suspect him at first, his own psychological unraveling reveals the truth to them.
A neighbor reported he heard a scream.
The narrator has to hide his crime from the police.
From what I can tell from the context, I believe that the narrator is admitting that he is nervous and had been nervous, but denies that he is crazy.
The narrator of "The Tell-Tale Heart" becomes angry at the police because he believes that they are lying to him. He thinks that they know that he killed the old man, and are remaining only to torture his conscience until he confesses.
The narrator
In "The Tell-Tale Heart," the narrator becomes increasingly paranoid and anxious in the presence of the police, convinced that they can hear the sound of the old man's heart beating beneath the floorboards. He ultimately confesses by revealing the location of the old man's body, betraying his guilt and mental instability.
Narrator
The narrator in "The Tell-Tale Heart" by Edgar Allan Poe is paranoid because of his guilt stemming from the murder he committed. He becomes increasingly agitated by the sound of the old man's heartbeat, which he perceives as a sign of his guilt. This paranoia drives him to confess his crime to the police.
The narrator keeps insisting that he is not mad in "The Tell-Tale Heart."
The narrator in "The Tell-Tale Heart" smiles after the killing due to his feelings of satisfaction and triumph over the old man's "vulture-eye." He believes he has accomplished the perfect crime and outsmarted the police with his meticulous planning. The smile reflects his distorted sense of accomplishment and lack of guilt.
They have much in common both being unreliable and mad. But to the differences. In the Cask of the Amontillado the narrator is angry and bent on revenge. In the tell-tale heart the narrator is sincere and acts our of paranoia.
In Edgar Allan Poe's "The Tell-Tale Heart," the resolution occurs when the narrator confesses to the police that he murdered the old man and buried his body beneath the floorboards. The narrator's guilt becomes overwhelming as he hears the sound of the old man's heart beating louder and louder, ultimately leading to his confession.