In this rousing sequel to The Blackstone Key, Rose Melikan's heroine returns to the world of espionage for an intelligent, thrilling adventure in Georgian England. When the story begins Mary is a wealthy heiress. Young ladies in her situation ought to marry well--as her friend Susannah Armitage has. But is Susannah's marriage to Colonel Crosby-Nash all that it seems? Mary thinks not, and when her suspicions lead to a meeting with the elusive spymaster,...