"The Elusive Pimpernel" by Emmuska Orczy is a historical adventure novel set during the French Revolution. It follows the daring exploits of Sir Percy Blakeney, also known as the Scarlet Pimpernel, as he leads secret missions to rescue French aristocrats from the guillotine. Filled with disguises, suspense, and heroism, the story unfolds with intrigue and romance against the backdrop of revolutionary France.