Harvard Ph.D. candidate Eloise Kelly continues her research of early 19th-century spies in the smart third book of the Pink Carnation series, following the well-received The Secret History of the Pink Carnation and The Masque of the Black Tulip. This installment focuses on 19-year-old Letty Alsworthy, who, after a comedy of errors, quickly weds Lord Geoffrey Pinchingdale-Snipe, her older sister...