I think it is the hardest thing in the world. I'm endlessly intrigued by what human nature is capable of, both the horrible things we are capable of and also the heroic things. I'm really interested in exploring that side of human nature.

If I had multiple lives, I'd like to do many things, including being a homicide investigator. I'm not brave enough to chase people and draw down on them. Having spent time with that, it can be an incredibly terrifying job.

I've always been kind of drawn to the extremities of human nature. I wrote my first screenplay when I was 16. The initial idea was a friendship between two prostitutes, and I spent time with a vice squad guy in Cincinnati who brought me to a brothel and gave me the rundown on how street prostitution works.

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.

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.

And as cynical and jaded as many have become, you see the heroic nature of cops, who put aside a lot of their own personal concerns and their families to speak for the dead, which is a sacred thing. Over time there is this thing in them that is very powerful and interesting and provocative to me.

The most surprising thing to me is what an incredibly intense effort it's been to create a world from the ground up. I had run a show that had already existed and had been created by the show-runner, Meredith [Stiehm]. It's a very different experience to come in at ground zero and meet people and assemble the cast and crew. As a group and as a family, we're creating this world.