Guillaume Gallienne, the Cesar-winning French actor-filmmaker, has joined the cast of Stephen Frears’ anticipated mini-series The Palace.

The HBO limited series, which stars Kate Winslet, Hugh Grant, Matthias Schoenaerts and Andrea Riseborough, tells the story of one year within the walls of the palace of an authoritarian regime as it begins to unravel. Gallienne, who was trained as a theatre actor at the prestigious Comedie Francaise, will star in the show as the husband of Winslet’s character.