The Scarlet Pimpernel by Baroness Orczy

Set during the French Revolution, The Scarlet Pimpernel follows the mysterious masked hero who secretly rescues innocent aristocrats from the guillotine while hiding behind the identity of an ordinary English gentleman. Filled with daring adventures, romance, intrigue, and unforgettable disguises, this classic novel inspired countless modern superhero stories and remains one of the greatest historical adventures ever written.