Sometimes it’s hard to say whether someone is not who they say they are – and that’s scary. Often psychopaths are described as being ‘two-faced’; once the charming mask of normalcy slips, a very nasty person can emerge. But this face underneath the face is something unknown to us, something ungraspable – psychopaths are simply very different from the rest of us. This was a complex question that I kept asking myself: how ‘human’ are psychopaths, are they really so fundamentally different from us and how do we relate to them as ‘normal humans’?