Before I write anything, before I create any assumption in my mind about what it's like to be in that world, I go out there first. I'm very drawn to darkness and light, very drawn to cop drama, because there are very few places besides war and murder and a homicide investigation where you see the extremes of human nature - the darkest crevices and cracks in what people do to one another.

I am endlessly fascinated by this notion that everyone has a secret. Some of our secrets are tiny, small things, and some of them are huge. Given that reality of the human condition, that's what our characters will go through. There will be some things where you'll just be like, "What the hell! How the hell did that happen?"

I'm really trying to just keep this internal, and be faithful to the story and the characters, and keep 99.9% of my brain there, serving the story. It's a great network. It's the golden network of cable, so it's totally an honor to be there and tell this story, but I try not to think about anything beyond that.

It was a very, very intense and long casting process [for The Killing] because we really had to find the right people who could carry the weight of this story, who had the chops and who had the spirit, where they could bring in so much of their own selves to these characters. So, the casting process took many months.

Because we spent so much time in the writer's room, not even talking about where it goes, but just who the people are in our world, we could find all those unexpected moments and twists and turns that we didn't even see ourselves.

I heard John Wells say something really smart, many years ago. He said, "Assume your audience is really intelligent. Assume that they are really smart, and tell your story that way." So, for me, it's about never assuming that they will go away because they're not entertained.

It's the open ocean right now because it's so unique. It's a really unique way of doing American television. There are a million possibilities. We can stay with the cops. We can introduce new worlds. And, who knows where it will end.