On a secluded bluff overlooking the ocean sits a Victorian house that contains a century’s worth of secrets. By the time Jane Flanagan discovers the house as a teenager, it has long been abandoned. There are still clothes in the closets, marbles rolling across the floors and dishes in the cupboards, even though no one has set foot there in decades. The house becomes a hideaway for Jane, a place to escape her volatile mother. Twenty years later, Jane returns home to Maine following a terrible mistake that threatens both her career as an archivist and her marriage. Jane is horrified to find the Victorian is now barely recognizable. The new owner, Genevieve, has gutted it and is convinced that it’s haunted. She hires Jane to research the history of the place and the women who lived there. The story Jane uncovers is even older than Maine itself.

Elisabeth, an accomplished journalist and new mother, is struggling to adjust to life in a small town after nearly 20 years in New York City. She neglects her work, losing untold hours to her Brooklyn moms' Facebook group, her "influencer" sister's Instagram feed, and text messages with the best friend she never sees anymore. Enter Sam, a senior at the local women's college, whom Elisabeth hires to babysit. Sam is struggling to decide between the path she's always planned on and a romantic entanglement that threatens her ambition. In short order, they grow close. But when Sam finds an unlikely kindred spirit in Elisabeth's father-in-law, the true differences between the women's lives become starkly revealed and a betrayal has devastating consequences.

Nora and Theresa Flynn are 21 and 17 when they leave their small village in Ireland and journey to America. But when Theresa ends up pregnant, Nora is forced to come up with a plan --- a decision with repercussions they are both far too young to understand. Fifty years later, Nora is the matriarch of a big Catholic family with four grown children. Estranged from her sister, Theresa is a cloistered nun, living in an abbey in rural Vermont. Until, after decades of silence, a sudden death forces Nora and Theresa to confront the choices they made so long ago.

As the lives and marriages of four couples unfold in surprising ways, we meet Frances Gerety, a young advertising copywriter in 1947. Frances is working on the De Beers campaign and she needs a signature line, so, one night before bed, she scribbles a phrase on a scrap of paper: “A Diamond Is Forever.” And that line changes everything.

Three generations of women converge on the family beach house in this wickedly funny, emotionally resonant story of love and dysfunction from the author of the bestselling debut novel COMMENCEMENT.