Before he died, Harry said that his wife knew everything about every trick that he did, and that she knew how they all worked. It was interesting to play with that idea, and to find the places where she really was afraid for his safety and where she was playing along. I had to find that line between what's a performance and what's real, and that's so much of what magic is, as well. It was really, really fun. They were really partners, in every sense of the word.