Not every psychopath ends up in prison or on the news. This film turns to the ones who don't: the boss who manipulates a whole office, the spouse who charms and then dismantles a partner's confidence, the neighbor who seems perfectly normal at the barbecue. Psychologists and researchers explain the traits that define non-criminal psychopathy, including glib charm, a total lack of empathy, and a talent for reading and exploiting other people's weaknesses, while people who have lived or worked alongside such individuals describe what it actually felt like to be on the receiving end. The film argues that these traits are more common than most people assume, showing up in corporate boardrooms and family homes as often as in courtrooms, and that the absence of a criminal record says nothing about the damage someone can do. It is less interested in diagnosing monsters than in showing how ordinary and unremarkable a psychopath can look up close.