"When you work with really great actors, you're just meeting another human being," Cate explains. "Because I come from a theatrical background, [I'm] used to ensemble playing and when you meet a great film actor, they're very generous, so it's just about working with the other person and having that human connection. [Leonardo] was very passionate about his role [as eccentric billionaire Howard Hughes] and obviously he'd done an enormous amount of research, as had Martin Scorsese. And they really embraced and welcomed me into that sort of inner sanctum. So that made my job a lot easier and were very understanding of how scared I was, at the undertaking, I think."