Like anything to do with trust, in any relationship it emerges and just the chemistry, vibe between two people an actor and a director. You just know whether this is someone I like to be with whose interaction with me I believe in.

The sets were fantastic. The Harry Potter sets are brilliant. You do get transported for a second.

I couldn't get as big as a bodybuilder. I tried to put on as much weight in the right places as I could. My weightlifting was impressive for me, but not for some of the guys I see down at the gym.

I respond to a part just intuitively when I read a script.

I got to read some writings by serial killers, and they got inside my head. They were quite disturbing. I read disturbing stuff about that very detached way of manipulating people to do things.

The actor shouldn't edit themselves or be anxious. And the actors that I admire are always the ones who are inventive and their imaginative life in free-willing. It's a director's job to go, "No here, don't do that, go there."

I'm not very good at being domesticated. I've tried. The domestic life I find claustrophobic - the rituals and habits and patterns.