The 10 Worst Psychopaths looks at history's most notorious and infamous psychopaths, and seeks to show how their life stories illustrate the classic psychopathic personality traits. Though all morally despicable, many of these individuals were charming, popular, and charismatic. This is part of our enduring fascination with the psychopath: they are capable of extraordinary inhuman acts, and yet they appear on the surface to be entirely 'normal'. It is only once you know what to look for that the psychopathy beneath the cunning mask becomes obvious. Chillingly, psychopaths are usually the person you would least suspect.