At The Society for the Preservation of Pennsylvania Antiques, fundraiser Eleanor "Nell" Pratt solicits donations-and sometimes solves crimes. When a collection of George Washington's letters is lost on the same day that an archivist is found dead, it seems strange that the Society president isn't pushing for an investigation. Nell goes digging herself, and soon uncovers a long, rich history of crime.

The new exhibit at the Philadelphia children's museum, Let's Play, isn't meant to be shocking-but when one of the installers is zapped with a fatal electrical charge, it's up to Nell to put her detective skills on display.