Hey, y'all I have a question for readers of Sydney Sheldon's books. So in most of his books, there is Tilly Bagshawi's name written on the cover. Why is that? Is the book written by her? Or do they write it together? Or is it because it is a sequel to his books? Angel of the dark is not a sequel to any book but both Sheldon's and Bagshawi's name is on the cover. Even he is the author of tilly bagshawi's books that were released after he died. Can you explain this to me, it is just confusing?