Has Joss ever revealed any master plan for the character?

They don't tell me anything, so it's really bit by bit. I'm not sure from one episode to the next what Lilah's going to be doing. Sometimes I hear rumours and then I ask [the producers], so I find out through word of mouth which is weird.

Do you think they actually know what's going to happen, or do you think they're just winging it?

I think with most shows they have what's called 'The Bible'. It's the outline of the season and where they're planning on going.

But [even with that] I do think they make changes. They called me for one episode and said, "We've run short, we've added your character into the show." So then they make up something, off the cuff, but most of the time I think it's planned out.

I know kind of where she's going but I'm not allowed to tell. Let's say it's very unexpected. There is a turn that even when I read it, it went, "What! Okay, okay, definitely very interesting. It's coming up in the last episode of the season.