I started off in theater; I did exclusively theater for four or five years. In the last few years, television has come along but I can still make film. I feel very privileged that I can move between them.

Sociopath is a word that has sort of become shorthand for psychopath and there's a distinct difference, it's interesting if you look it up. Sociopath if you look at the medical definition, the profile of a sociopath is that they are supremely intelligent people that are also pathological liars, they have no moral structure and there is one more, they have no compassion or empathy for other people.

For me, drama is conflict.

I think for me with theater, I need to take a break and then fall in love with it again. And then go do it again.

All I've tried to do as an actor is follow the good writing. That's been my main drive. It's not always possible, so when you do come upon it, like when I came upon this, you realize pretty quickly this is something you need to be involved with.

But television affords you, what you just described, to - over the course of 18 hours, now that we're doing a third season - tell the story of this man. You're not under any obligation, really, to do massive expositional stuff at the beginning. You're at liberty to say, "Come with us on this journey," and, gradually, you become aware of what his motivations are, what drives him, what his weaknesses are, what his strengths are. That's what I think's sucking people into these worlds, because it is kind of like a novel, you just go really, really deep.

And once you're unafraid with death, I think your capacity for violence is immediately increased. Once you're unafraid of death, you are a very, very dangerous adversary