Short review on this book, an overall a fantastic read:

This is a story about madness. Not raving madness, which shows its face through obvious traits. Schizophrenic mutterings. Self-inflicted abuse. This is the story of arguably the most insidious madness–the kind that charms, seduces and is, above all, heartless. Jon Ronson’s most recent non-fiction work, The Psychopath Test, is a dizzying trip down the rabbit hole of this particular kind of madness–psychopathy.