Edwardian England. Agnes Ashford knows that her duty is threefold: she needs to work on cataloguing the archive of the titled Bryant family, she needs to keep the wounds of her past tightly under wraps, and she needs to be quietly grateful to her employers for taking her up in her hour of need. However, a dark secret she uncovers due to her work thrusts her into the Bryants' brilliant orbit - and into the clutch of their ambitions. They are prepared to take the new century head-on and fight for their preeminent position and political survival tooth and nail - and not just to the first blood. With a mix of loyalty, competence, and well-judged silence Agnes rises to the position of a right-hand woman to the family matriarch - the cunning and glamorous Lady Helen. But Lady Helen's plans to hold on to power through her son are as bold as they are cynical, and one day Agnes is going to face an impossible choice...