A London Season — Sheila Bishop

Susan Frensham, wife of many years, mother of four, receives a strange package in the mail. The package contains a treasure stolen thirty years before -- when Susan was about to make her debut.

The sight of the family jewel brings to Susan's mind that whole marvelous, glorious, never-to-be-equalled debutante season when dinners and balls and dances and dancing cards made up one's nights; when practicing curtsies made up one's days; when girl friends were to be gossiped with, and boys were to be fought over. And when a family servant is accused of stealing the precious brooch.

Only with the unexpected arrival of the jewelry in the mail, after all these years, does Susan begin to unravel and finally solve the mystery -- and learn a truth about her own marriage as well.