The novel “Chapterhouse Dune” by Frank Herbert was published for the first time in 1985. It’s the sixth book in the Dune saga and follows “Heretics of Dune”.

The Honored Matres keep on conquering planets controlled by the Bene Gesserit. Lampadas, where there was an important Sisterhood school, fell and Chancellor Lucilla was only able to share her memories with Rebecca, a Jewish “wild” Reverend Mother. The Jews managed to escape to the planet Gammu but have to hide in a no-chamber.

On the Chapterhouse planet, the Bene Gesserit are trying to replicate the desert of ancient Arrakis to revive the great worms. To try to turn the tide of what seems like a lost war, it’s essential to raise a ghola of Bashar Miles Teg but Duncan Idaho has his ideas about the child. Duncan is also taken by his relationship with Murbella, the captured Honored Matre who is on her way to becoming a Reverend Mother after being trained as a Bene Gesserit.