It's been amazing, I think Amber has been great. She's only 25 and she's really got it together. I'm slightly in awe really.

It's lovely when you get two writers together who really are coming from the same place. It's not like they've both got different agendas and there's any kind of fight there, there's a very strong voice coming from the two of them and that's really encouraging.

They've been really lovely about changes, because I know they were changing things quite a lot up to and during recording. They've been very flexible with that, and it's really lovely to work for them. They've been so supportive and very energetic, especially Amber. She's so 'up' that she's injected the cast - who are restrained British actors - with a bit of a zing. But that's the writing as well, because you can't really be too reserved.

[After] one battle scene, we'd all gotten over our reserve I think. You can't really fight someone, fight demons [with it]. Seeing people doing these amazingly silly voices on some of the demons and stuff [has been] very impressive, and the cast are lovely. I hadn't worked with any of them before, and we've got on like a house on fire, so it's been good.