As a short-story writer, Poe was a fascinating man of imagination. In theme, Poe places the human mind under investigation and probes insanity beneath the surface of normal existence. He was the first author in American literature to make the neurotic, the heroic figure, the protagonist, in his stories. Poe's most enduring tales are those of horror, the horror coming, from the working of an irrational or criminal mind, driven to evil or insanity by a perverse irrational force which, to Poe, is an elementary impulse in man.

Typically, The Cask of Amontillado, The Black Cat, and The Tell Tale Heart are three criminal stories of this kind. In these tales, Poe takes readers in the murky territories of the strange world of insanity. And now, let's see what the features and familiarities of these half-mad, evil, and dark criminal minds.

To start with, like many Poe's stories...