 variations on the theme of, you know, this classic pact with the devil. And that was one of my favorite books to write as well. They were all favorite books to write, I mean, to be honest. But this one was particularly good because I got to visit a lot of the locations connected with the historical Faustus in Germany. And, you know, so it was quite a paranormal tour, as it were, staying in places that he had supposedly stayed in and