When Lucy West and Kate Cunningham meet, the two spirited young women recognize kindred spirits in each other. Both Lucy and Kate married early and lack complete confidence in the brave new world of mothering. As their friendship deepens, their lives become fully intertwined. With husbands and children in tow, they spend glorious summers together in a large house on Nantucket island, sailing and feasting on lobster—and when their husbands are back on the mainland, the two women even get a chance to kick up their heels. The closest of allies, Lucy and Kate share their highs and lows, their joys and darkest secrets.