Kevin Anderson and Brian Herbert attempt to revive the Dune series 21 years after Chapterhouse: Dune was released with Hunters of Dune. While it isn't a bad book, it falls short of the mark. I understand that this book and Sandworms of Dune, its sequel, are based in part on Frank Herbert's notes about a potential Dune 7. I am not certain if the notes were not sufficient, or if the base idea for the book was flawed. However, the result is a lackluster sequel to a series that had ended on a mysterious, but mostly satisfying, note.