Knightley discusses current and upcoming projects, including Anna Karenina, in this interview for PBS. On being drawn to period pieces:
I think it’s the element of fantasy, actually. I find that really interesting. It’s a world that’s rules you don’t know, so the rules can be created, so the drama can always be created, and kind of almost freed within that. I quite like it as a kind of dramatic conceit. I find it an interesting way to draw myself in and to draw people in. I guess it’s something to do with that.