This epistolary novel was probably written in 1794, but was not published until 1871.

Lady Susan Vernon, middle-aged and recently widowed, has retained her looks and appealing vivacity. She makes use of her bereavement and her loss of wealth by imposing herself on the hospitality of relatives, and by amusing herself in flirtation with the various men who fall under her spell.

Lady Susan has a daughter, Frederica, who is bashful and innocent—in stark contrast to her unfeeling and manipulative mother. Her mother is anxious to marry Frederica off to a spouse of appropriate wealth and social standing, and also, perhaps, to capture a new mate for herself.

The forty-one letters between the various parties in this tale of twisted courtship describe Lady Susan's path to marital satisfaction for her daughter and herself.