The tangled skein arises from Mary's love for the Robert d'Esclade, fifth Duke of Wessex, said to be the people's choice as King Consort. Wessex is chivalrous and charming, but semi-betrothed to Lady Ursula Glynde, whom he has not seen since her infancy. Wessex is repelled by the idea of having his wife thrust upon him and purposely avoids Lady Ursula. Unknown to Wessex, the Queen jealously guards him against Ursula, who is extremely beautiful.

Baroness Emmuska Orczy (1865-1947) was a Hungarian-born British novelist and playwright. She is best 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.