Baroness Emma Magdolna Rozalia Maria Jozefa Borbala "Emmuska" Orczy de Orci ( 23 September 1865 – 12 November 1947) was a Hungarian-born British novelist, playwright, and artist of noble origin. She is most known for her series of novels featuring the Scarlet Pimpernel, the alter ego of Sir Percy Blakeney, a wealthy English fop who transforms into a formidable swordsman and a quick-thinking escape artist, establishing the "hero with a secret identity" into popular culture.
Opening in London's West End on 5 January 1905, The Scarlet Pimpernel became a favourite of British audiences. Some of her paintings were exhibited at the Royal Academy in London. During World War I, Orczy formed the Women of England's Active Service League, an unofficial organisation aimed at encouraging women to persuade men to volunteer for active service in the armed forces.