Adventures of the Scarlet Pimpernel successfully pleaded with her husband not to take the traitorous Lord Kulmsted (see 'The Traitor' in The League of the Scarlet Pimpernel) on his latest mission. Several members of the league would have liked to extend the prohibition to young Lord Fanshawe, who, despite a keen start, is wilful & obstinate – an inveterate gambler who is apt to turn very nasty if matters don't go the way he desires. Fanshawe has, for several years, been in love with Aline, the daughter of The Comte d'Ercourt, whom he first met before the revolution when she was a child of sixteen.
The Scarlet Pimpernel wily new French envoy to England. Chauvelin's agents have stolen a letter proving her beloved brother Armand is in league with the Pimpernel. Chauvelin offers to trade Armand's life for her help against the Pimpernel. Contemptuous of her seemingly witless and unloving husband, Marguerite does not go to him for help or advice. Instead, she passes along information which enables Chauvelin to learn the Pimpernel's true identity. Later that night, Marguerite finally tells her husband of the terrible danger threatening her brother and pleads for his assistance. Percy promises to save him. After Percy unexpectedly leaves for France, Marguerite discovers