The thinking machines have been defeated, but the struggle for humanity's future continues. Gilberthus Albans has founded the Mendat School, where students are taught the effective techniques of thinking machines. However, Gilberthus balances on a tightrope between his own beliefs and the compromises he makes in order to survive the Battlerian zealots.

At the same time, Abess Raquela is trying to rebuild her Brotherhood School on Valach IX, with her most talented and ambitious student, Valya Harkonnen, by her side. In the meantime, Joseph Vemport is imposing an unrelenting embargo on any planet that accepts Manford Toronto's anti-technology manifesto, hoping that destitution will lead to their submission. But zealots rarely surrender easily...

In the second book of the gripping trilogy, the Mendat, the Navigators, and the Brotherhood seek to improve the human race, but humanity is preparing to plunge into an endless Dark Age...

"The Mendat of Dune is an action-packed book that reads quickly despite its size." – bookreporter.com

"The magic remains even after the book is over." – kirkusreviews.com