The Cask of Amontillado," which first appeared in Godey's Lady's Book in 1846, is a classic example of the use of an unreliable narrator. Montresor tells his tale of revenge smugly, as he invites the reader to applaud his cleverness much like the narrator of “The Tell-Tale Heart.” By telling the story from Montresor's point of view, Poe forces the reader to look into the inner workings of a murderer's mind.
Its walls had been lined with human remains, piled to the vault overhead, in the fashion of the great catacombs of Paris. Three sides of this interior crypt were still ornamented in this manner. From the fourth side the bones had been thrown down, and lay promiscuously upon the earth, forming at one point a mound of some size