The Family Pool (Shortstory collection, #2)

Mary Adams has married into money. At first this is amazing and she is overwhelmed with thankfulness; but as time goes by she begins to realize that all is not well in the wealthy family. She comes upon a creepy volume of genealogy in the library of the house that was given to her and her husband John to live in, and from there, her curiosity turns into an obsession to get to the bottom of it all. She has to do this without John realizing it, because he is part of The System...