"Gabriella Monroe is doing her best to pretend that everything is fine, but her life is a mess. Sales are down at her vintage dress shop, her beloved grandmother isn't her usual spunky self, and Gabby desperately misses the closeness she had with her sisters, Margaret and Emma-who were once so inseparable that their family called them the Monroe Musketeers. When the sisters stumble across a stash of letters that reveals their grandmother's secret...