One of the most intriguing aspects of "Psicopata Americano" is its use of unreliable narration. Bateman's voice, cold, detached, and often humorous, guides the reader through a maze of distorted perceptions, making it difficult to discern reality from fantasy. Ellis expertly manipulates the narrative, leaving the reader questioning what actually transpires and what is merely a product of Bateman's fevered imagination. This blurring of lines between fact and fiction serves to underscore the instability and unreliability of human perception, as well as the instability of the self.