Chapterhouse Dune

The desert planet Arrakis, called Dune, has been destroyed. Now, the Bene Gesserit, heirs to Dune's power, have colonized a green world-and are tuning it into a desert, mile by scorched mile.
Chapterhouse Dune is the last book Frank Herbert wrote before his death: A stunning climax to the epic Dune legend that will live on forever.