The Tell Tale Heart by Edgar Allen Poe is told from one point of view. It has a first person point of view by a narrator in the story, however, this can be confusing in this particular work for a couple of reasons.
First, the nervous tension created positions the reader to enter the mind of this narrator and you can almost get lost inside there.
Secondly, this piece has what is called a foil, or a doppleganger. This is a narrator or protagonists exact opposite intended to show contrast. We see this in the old man. When the old man "dies" the narrator confesses to have screamed and the body is never found, so it could be the old man is a part of the narrator's imagination. This is a defining mark of Poe. Some might consider this extra character part of a second point of view, but the truth is there is one point of view. See the link below.