In 1793 Sir Percy learns that Lady Marguerite's brother, Armand St. Just, was...
The Scarlet Pimpernel
Season 1 Episode 3: A King's Ransom/The Scarlet Pimpernel and the Kidnapped King
In 1794, Percy learns that the Dauphin has been kidnapped from an orphanage by a masked swordsman. Later, Robespierre receives a ransom note and directs Chauvelin to find and secure the boy.