In our uncertain era full of real life horror, what's driving our appetite for true crime and fascination with the macabre? From recent documentaries The Jinx, Making a Murderer and The Family to serial killer anti-heroes in film and TV, and the stark brutality of Scandi-noir, we examined our obsession with the dark side of human nature, the psychology of fear and how recent technological advances like biometric analysis are providing unique findings into our physiological response to on-screen horror.