When I was younger, I would mess about and have a laugh with everyone. I was doing Atonement when I was about 12, and as we went to do this very serious scene, the director Joe [Wright] came up to me ... I'd been giggling right up to the beginning of the take. And he came up to me and said, "Okay, you need to be serious now." I completely idolized him.

Joe Wright was almost like a teacher, to be firm with me, that really stuck with me. And that helped me as I've gotten older.

I think I do believe in the afterlife; I have heard stories from people who I can completely trust that have seen ghosts.

Ivo van Hove is directing The Crucible, and rehearses in quite an unusual way. We started rehearsals last week and dived straight into the first act, like, five minutes after we all turned up. No warm-ups. We were very intensely immersed in that whole world on day one. It was quite surreal because I've never done any theater before.

I like films where there's a relationship between two women. I always think that's lovely to watch on the screen.

One of the things that would steer me away from a franchise is that I'm playing the same character all the time and I wouldn't want to be known for that.

I've been dealing with so much press for Brooklyn, and now I am rehearsing for a play, and it is hard.