Guest Stars Jessica Barden as Young Valya Harkonnen Jihae as Kasha Jinjo Co Starring Barbara Marten as Sister Avila Camilla Marie Beeput as Reverend Mother Dorotea Cathy Tyson as Raquella Berto-Anirul Sam Spruell as Horace Laura Howard as Duchess Orla Richese Flora Montgomery as Truthsayer Vera Brendan Cowell as Duke Ferdinand Richese Tessa Bonham Jones as Lady Shannon Richese Karima McAdams as Sister Nazir
