At New York Comic Con, Dune: Prophecy star Emily Watson explains her new Harkonnen character and her connection to the family. A prequel to Denis Villeneuve’s Dune movies set 10,000 years prior, the upcoming HBO series explores the beginnings of the Bene Gesserit, the secretive sisterhood that undergoes rigorous training to achieve extraordinary abilities, focusing on the sisters Valya and Tula Harkonnen. Dune: Prophecy‘s cast includes Emily Watson as Valya and Olivia Williams as Tula alongside Sarah-Sofie Boussnina, Travis Fimmel, Mark Strong, Chris Mason, and many more.