The first book I read, written by Katherine Neville, was The Eight. It was so fascinating and enjoyable that I'm now reading The Magic Circle. I recommended her books to a friend and she's now also reading The Magic Circle. Both my friend and I were wondering how much research she does for each book, ie how much is true and how much is fiction. I realize the story is fiction but she always includes what appears to be historical data, which makes the story really come alive. I love her wonderful books!