If there were such a thing as karma, Gregor would say he had it--bad karma. His mental illness has been present practically since birth. During early childhood, Gregor already knows he's different. As he grows to be an adult, those differences become violently apparent. He is a monster born, not made, and his extremely disturbed mental state is a thing of nightmares.

Told in a series of chilling vignettes, G: The Story of a Madman is a character study of one man's descent into pure evil. It begins with "Baby G," a tale of Gregor's upbringing. A few years later, run into him again in...