It's a real testament to the amount of skill and talent involved, across the board, whether it's the production design, the construction, the costume design, the other actors, the way it's shot, the directors we had on it, or obviously John's writing. When things do go well, it sometimes seems easy, in a weird way, but it's actually down to a lot of cogs working in a big machine. But, I'm certainly happy to be going back. I'm excited to carry on.

I hope I'm always lucky enough to be able to work in theater, TV, and big films and small films. I think there's advantages and disadvantages to all of them. The fact that this was a small film without much money and without much time made it rich in energy and momentum and drive when we were actually making it 'cause that's all you've got. You've just got the story and the people.

Weirdly, some of the middle stuff of the descent into something going wrong were the hardest, tonally. You don't want to jump the gun and be instantly paranoid about the fact that she has made coffee wrong because that would be weird. It's the slow build and letting it sink in. If they say everything is okay, you believe your partner. You don't want to rattle the boat too much on your honeymoon.

Personally, I just want to work on stuff that challenges me, that excites me, and that I think is original. You want to do something that does to other people what films do to you. It's the most wonderful thing in the world when you can lose yourself from reality and go into a story, and believe it and go on that journey with people, and you have to work that will somehow do that. It won't always, but hopefully sometimes.

There's comedy in tragedy, and tragedy in comedy. There's always light and dark in most jobs. Whether it's framed as a comedy, drama or tragedy, you try to mix it up within that. You can work on a comedy and it's not laugh-a-minute off set. You can work on a tragedy that's absolutely hilarious.

I think it's amazing to have one writer write every episode of a series. It's very rare, I think. You get a voice that continues.

The Victorian world is extremely dark and extremely bright.