Charles' coronation gets closer as Mary discovers who poisoned Elizabeth and Catherine becomes a different kind of victim of the castle's killer.
Episode rating
Cast of episode
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- Mary Stuart
- Catherine de' Medici
- Charles de Valois
- Elizabeth Tudor
- Lola
- Sebastian 'Bash' de Poitiers
- Gideon Blackburn
- Greer Castleroy
- Claude de Valois
- Leith Bayard
- Stéphane Narcisse
- Robert Dudley
- Christophe
- Lord Cunningham
- The Butcher
- William
- Lord Fluret
- Rat Catcher
- Governess
- Alice
- Agatha
- Silk Peddler
- Buxom Servant
- Courtesan
- Castle Guard