The Breaking Point by Mary Roberts Rinehart, Fiction, Mystery & Detective

The Wheeler house was good, modern and commonplace. Walter Wheeler and his wife were like the house. Just as here and there among the furniture there was a fine thing, an antique highboy, a Sheraton sideboard or some old cut glass, so they had, with a certain mediocrity their own outstanding virtues. They liked music, believed in the home as the unit of the nation, put happiness before undue ambition, and had devoted their lives to their children. For many years their lives had centered about the children. For years they had held anxious conclave about whooping cough, about small early disobediences, later about Sunday tennis. They stood united to protect the children against disease, trouble and eternity.