Main •
Kate Winslet as Elena Vernham, the
chancellor of a
Central European
autocracy who gradually finds her position threatened by domestic turmoil. •
Matthias Schoenaerts as Herbert Zubak, a recently disgraced soldier appointed as Elena's personal "water diviner" who quickly becomes her most trusted advisor. •
Guillaume Gallienne as Nicholas Vernham, Elena's French, poetry-loving husband who becomes suspicious of her relationship with Zubak and his influence over her. •
Andrea Riseborough as Agnes, the Palace Manager and Elena's right-hand woman. •
Danny Webb as Mr. Laskin, the head of the country's security service. •
Henry Goodman as Mr. Singer, one of Elena's ministers. •
David Bamber as Victor Schiff, one of Elena's ministers. •
Rory Keenan as Peter •
Stanley Townsend as Emil Bartos, the country's leading businessman and director of its
cobalt mines.
Guest •
Martha Plimpton as Judith Holt, a
United States senator and the chair of the
Senate Foreign Relations Committee who seeks to protect American interests in the country's cobalt resources. •
Hugh Grant as Edward Keplinger, the former chancellor who was ousted seven years earlier and has since been held prisoner in a cell located beneath the palace. •
Pippa Haywood as Susan Goin, the former
Minister of Finance who is imprisoned after being falsely accused of conspiring to assassinate Elena. •
Jessica Frances Dukes as Deborah Kaiser, the wife of an American CEO seeking to access the country's cobalt resources. •
Karl Markovics as Tomas. •
Julia Davis as Marina, a dream interpreter. • Kenneth Collard as Dr. Kershaw, Elena's former personal physician who is imprisoned after being falsely accused of conspiring to assassinate her. • Louie Mynett as Oskar, Agnes'
epileptic son whom Elena dotes upon. •
Kasia Madera as a state news anchor == Episodes ==