Part of an actors job, in my opinion, is adjust to the characteristics of the director and try to understand to how he tries to work.
Art has to be reflective of our society.
People are complicated. People have secrets. It doesnt make them good people or bad people.
Working on 'Dexter' is like shooting one big movie every year.
You just see a good project and want to be involved in it, and thats what Dexter was.