A young woman marries a wealthy widower and moves into his large English country house. She quickly realizes that the memory of her husband's first wife, Rebecca, haunts every corner of the estate. The housekeeper's obsessive devotion to Rebecca and the mysterious circumstances of her death continue to overshadow the second wife's attempts to make a happy life with her husband. As secrets about Rebecca's life and death are revealed, the new wife must grapple with her own identity and place within the household.

The novel revolves around a young Englishman who seeks the truth about his cousin's mysterious widow, suspecting her of foul play in his cousin's untimely death. As he becomes entangled in the widow's seductive charms, his initial suspicions transform into a complex blend of attraction, jealousy, and uncertainty. Set against the backdrop of a grand Cornish estate, the story delves into themes of obsession, inheritance, and the blurred lines between passion and poison, leaving readers to ponder the true nature of the enigmatic woman at its center.

"The Shell Seekers" is a generational novel that follows the life of Penelope Keeling, a woman in her sixties, who reflects on her past while dealing with her three grown children, each with their own selfish motives. When Penelope discovers a valuable painting in her possession, her children's greed surfaces as they pressure her to sell it. Instead, Penelope embarks on a journey of self-discovery and reflection, revisiting her bohemian past, her wartime romance, and the beauty of her father's paintings. The novel explores themes of family, love, loss, and the importance of art and beauty in life.