It is early evening when Hope Tantry arrives at the small cottage in England's pastoral Lake District where her mother, Ally, spent the last years of her life. Ally -- one of a close-knit group of women who called themselves the Wednesday Sisters -- had used the cottage as a writer's retreat while she worked on her unpublished biography of Beatrix Potter, yet Hope knows little about her mother's time there. Traveling with Hope are friends Anna Page and Julie, first introduced as little girls in The Wednesday Sisters, now grown women grappling with issues of a different era. They've come to help Hope sort through her mother's personal effects, yet what they find is a tangled family history -- one steeped in Lake District lore. Tucked away in a hidden drawer, Hope finds a stack of Ally's old notebooks, all written in a mysterious code. As she, Julie, and Anna Page try to decipher Ally's writings -- the reason for their encryption, their possible connection to the Potter manuscript -- they are forced to confront their own personal struggles: Hope's doubts about her marriage, Julie's grief over losing her twin sister, Anna Page's fear of commitment in relationships. And as the real reason for Ally's stay in England comes to light, Hope, Julie, and Anna Page reach a new understanding about the enduring bonds of family, the unwavering strength of love, and the inescapable pull of the past.