THE TELL-TALE HEART (1843)

This is of course one of Poe's best known stories today, focusing on the viewpoint of a "perilous psycho" who becomes obsessed with killing an old man who has never done him any harm. The madman does kill his victim and conceals the body. When police investigate the resultant commotion, the killer seems to be pulling off his crime, until he imagines that the dead man's heart is still beating, thus forcing the madman to confess his crime.

An odd touch: the madman becomes obsessed with his victim's "vulture-like" eye, but never states outright that the old man even has more than one.