How 'Dune: Prophecy' showrunner Alison Schapker boiled down endless 'Dune' lore into six robust hours of TV

Emily Watson as Valya Harkonnen in "Dune: Prophecy."

HBO

• HBO's "Dune: Prophecy" explores the origins of the Bene Gesserit sisterhood.
• The show is loosely based on a "Dune" prequel novel but expands past its scope.
• Showrunner Alison Schapker spoke with BI about bringing the franchise to the small screen.

"Dune: Prophecy" goes way back, thousands of years into the history of the powerful women who shaped the history of the entire "Dune" universe.

"Any...