Chapterhouse: Dune is a 1985 science fiction novel by Frank Herbert, the last in his Dune series of six novels. It rose to No. 2 on The New York Times Best Seller list.

The Bene Gesserit are a group in Frank Herbert's fictional Dune universe. A powerful social, religious, and political force, the Bene Gesserit is described as an exclusive sisterhood whose members train their bodies and minds through years of physical and mental conditioning to obtain superhuman powers and abilities that seem magical to outsiders. The group seeks to acquire power and influence to direct humanity on an enlightened path, a concerted effort planned and executed over centuries.