The Lady in Question (Effington Family & Friends)

With her reputation in a tatters thanks to an impulsive decision, Miss Delia Effington retires from society, until she attends a ball disguised as her identical twin sister, Cassandra, and meets the dashing Vicount St. Stephens, who, unbeknownst to Delia, in his position as an agent for the Crown, has been masquerading as a butler in her home to protect her from her enemies. Original.