The Psychopath Test: A Journey Through the Madness Industry is a compelling exploration into the world of psychopaths and the industry of doctors, scientists, and others who study them. Bestselling journalist Jon Ronson delves into a potential hoax that has been played on the world's top neurologists, leading him into the heart of the madness industry.

An influential psychologist, convinced that many CEOs and politicians are actually psychopaths, teaches Ronson to identify these individuals through subtle verbal and nonverbal clues. With his newfound skills, Ronson navigates the corridors of power, encountering a death-squad leader institutionalized for mortgage fraud, a CEO renowned for his psychopathy, and a patient in an asylum for the criminally insane who claims his sanity.

Through his journey, Ronson not only uncovers the mystery of the hoax but also reveals the disturbing truth that those at the forefront of the madness industry can be as mad as those they study. He highlights how increasingly, ordinary people are defined by their most extreme traits.