The story's title says that the heart is a "tell-tale" sign. It refers to the beating heart that eventually drives the narrator to confess his crime. ... The heart will tell the tale of his crime- hence the title "A Tell-Tale Heart".
The narrator in "The Tell-Tale Heart" shares the story from his own, personal perspective; thus the story is told in a first-person point of view. By using personal pronouns such as I, me, and my, the narrator is able to tell his tale as only he can experience it.
