While Soairse Towers certainly makes her presence known to us, The Lost Heiress actually takes us through the Towers family history via one Florence Talbot, who was in fact born at Cliffhaven.
The book opens with the search for a companion for the high spirited, wealthy orphaned Soairse, who has been pulled out of boarding school against her wishes and is proving hard to manage, especially since her last remaining relative, older brother Ransom Towers spends most of his time across the country in Washington DC serving out his term in office.
The Towers family is marked by great wealth and tragic accidents and political achievement in every generation. Ransom and Soairse have lost not only their parents but brother Theo died in a boat accident that also took the life of an unnamed woman, a scandal that was mitigated by Theo's death and the Towers fortune.
In the prologue we learn that workmen have found not one but two sets of bones buried on the Cliffhaven property. Florence realizes that finally all the secrets must come to light. Florence's mother was on staff in the Towers household and gave birth in secret. The staff more or less treated Florence as a sort of mascot until she was six years old, and her mother died. At which point she was presented to Doris O. Towers the family matriarch at the time who decided that rather than sending the child to an orphanage, she would move into the nursey with granddaughter Verity. From that point on, Florence and Verity were inseparable and usually tagging along behind Charles and Astrid, the older Towers children. It was an idyllic life for Florence until the girls reached an age when Towers children go to boarding school. Florence doesn't return to the family fold until Astrid marries and moves to Europe, where upon Scarlet Towers requests that Florence joins her to watch over her. Circumstances eventually lead Florence back to Cliffhaven, and this time Charles as head of household, asks her to be nanny to the newly born Soairse.
We learn that Soairse disappeared the night of her eighteenth birthday party. A night that was significant because, turning eighteen would allow her control of her finances and as such free her from living by Ranson's dictates, under the eye of paid companion Ana Rojas.
The book is told from multiple points of view, but while we are meant to believe that it is about Ana, it really isn't. This is Florence's tale of being almost but not quite a Towers, of being so intertwined with the family that she knew what was best, and were the bodies were hidden...figuratively...and maybe literally.