Dr. Merel Kindt is a clinical psychologist with a new way to treat, or even eliminate, phobias and the effects of emotional trauma: first you confront the thing you’re scared of—then you take a pill, a beta-blocker called propranalol. Amazingly, it seems to work. In this four-part documentary series, we follow the doctor as she cares for patients terrified of everything from butterflies to needles, and begins to question just how fundamental fear really is to human nature.