Guest Stars Niamh Elwell as Brianna "Bree" Randall Fraser Romann Berrux as Fergus Fraser Robbie McIntosh as Magnus Claire Sermonne as Louise de Rohan Adrienne-Marie Zitt as Suzette Michèle Belgrand-Hodgson as Madame Elise Lionel Lingelser as King Louis XV Niall Greig Fulton as Monsieur Forez Audrey Brisson as Sister Angelique Ilario Calvo as Father Laurentin Guillaume Lecomte as Gentleman of the Bedchamber