Many of Poe's short stories treat the same type of phenomena, yet in fact, part of Poe's greatness lies in the diversity of his creativity, and everything he wrote carries with it the distinctive trademark that would identify it as being a work by Edgar Allan Poe. The stories in this section, likewise, are Poe's best examples of another type of story; these are tales of the psychotic personality, one who tries to give a rational explanation for his irrational and compulsive acts. In both stories treated here, the criminal is so completely occupied with his own mental state and in justifying his horrifying actions that the reader is not nearly as aghast at the horrors that the criminal perpetrates, as he is at the bizarre mental state of the criminal. The cruel acts performed by the criminal in both stories are de-emphasized in order to examine the mind of the criminal. In other stories, Poe creates a feeling of horror in the reader's mind by certain acts of cruelty: Here, the reverse is true; for example, the narrator's murder of his wife in "The Black Cat" occurs so suddenly that we hardly notice the horrible cruelty of the act. Instead, we note the mental state of the psychotic killer.
Poe made one assumption throughout his writings that is very important in understanding both of these stories. Poe assumed that any man, at any given moment, is capable of performing the most irrational and horrible act imaginable; every mind, he believed, is capable of falling into madness at any given moment. Thus, these stories deal with those subconscious mental activities which cause a person who leads a so-called normal existence to suddenly change and perform drastic, horrible deeds. Unlike some commentators who thought that Poe was trying to determine exactly what constitutes madness, Poe was more accurately concerned with the conditions and the various stages which lead a person to commit acts of madness, particularly when that madness manifests itself in an otherwise normal person. Both narrators in these stories are—just prior to their atrocities—considered to be normal, average, commonplace men. Yet without warning, each of them loses his sanity momentarily. Poe's emphasis in these stories, particularly in "The Black Cat," is on the fact that the narrator is sometimes aware that he is going mad. Yet even with this self-knowledge, he can do nothing about his terrifying, changing mental state.
Aside from the general patterns and concerns that are present in both stories, there are even more basic similarities: Both stories, for example, begin with (1) a first-person narrator who (2) begins his story by asserting that he is not mad ("Why will you say I am mad" and "Yet, mad am I not"); (3) in addition, both narrators are seemingly average people at the beginning of their chronological narratives; and (4) both perform crimes that are both irrational and intensely personal; (5) both love their victims deeply (the narrator of "The Tell-Tale Heart" loves the old man he murders, and the narrator of "The Black Cat" loves and adores his wife, and, therefore, ironically (6) the murderers' love for their victims makes their crimes even more irrational; (7) both narrators consider dismembering the corpses of the victims; this is actually done in "The Tell-Tale Heart," and in "The Black Cat" it is considered before the narrator finally decides to entomb the corpse in the chimney; (8) in both cases, the narrator's over-confidence in the superiority of his concealment of the body leads directly to the discovery of the body. There are other similarities in the two stories, but these basic correlatives suffice to show how Poe uses similar techniques to achieve the desired effects in each story.
In conclusion, in both of these stories, the narrator attempts a rational examination and explanation for his impulsive and irrational actions. He attempts to bring reason into the picture to explain a completely irrational act. Both stories attempt to present an exterior view of the interior disintegration of the narrator. Both narrators begin their stories at a moment when they are sane and rational, and throughout the story, we observe their changing mental states. These tales are perhaps Poe's most thorough investigations of the capacity of the human mind to deceive itself and then to speculate on the nature of its own destruction.
