I think one of the beautiful moments in preparation was working with J.K. Rowling. I spent an afternoon when she gave me the entire history of this great character. I remember she went in and she was having tea. She had these incredible heels on. She said 'OK, if you don't mind I'm going to stand up.' And she stood up for nearly three hours and just walked up and down, talked, talked -- and it just came out, it's just living in her. And I'm sitting there scribbling down notes and getting all of this incredible insight into this character, which I had a little opportunity to use in this current one [Fantastic Beasts: The Crimes of Grindelwald] and next year I go ahead and we do another chapter [in Fantastic Beasts 3]. There's more to come with that.