Good and evil, right and wrong. In our post-modern world, it can feel like such objective characteristics have no place in society – “evil”, in particular, feels like too strong a phrase to attribute to anything or anyone in these relativist times. And yet it continues to beguile us in fiction and in real life, just as much as we respond to the struggle between heroes and villains in both real and imagined narratives. The question is, why? And is this deeply-held notion of “black-and-white” morality a necessity, or a mistake?