At birth, Violet and Rose Flowers were identical, save for a tiny bluish-purple mark gracing Violet’s slender neck. By nineteen, their temperaments distinguish them, as different as the flowers their mother named them for—Violet, wild and outgoing, and Rose, solitary and reserved. Still, they are each other’s world. Then, on a sweltering, terrible August night in 1928, an explosion rocks Lamb’s Dance Hall in Possum Flats, Missouri, engulfing it in flames, leaving one twin among the dozens dead, and her sister’s life forever changed.

Haunted by the freak accident that killed their father when they were children, Jim and Bob Burgess escaped from their Maine hometown of Shirley Falls for New York City as soon as they possibly could. Jim, a sleek, successful corporate lawyer, has belittled his bighearted brother their whole lives, and Bob, a Legal Aid attorney who idolizes Jim, has always taken it in stride. But their long-standing dynamic is upended when their sister, Susan - the Burgess sibling who stayed behind - urgently calls them home.

Willa Drake can count on one hand the defining moments of her life. In 1967, she is a schoolgirl coping with her mother's sudden disappearance. In 1977, she is a college coed considering a marriage proposal. In 1997, she is a young widow trying to piece her life back together. And in 2017, she yearns to be a grandmother but isn't sure she ever will be. Then, one day, Willa receives a startling phone call from a stranger. Without fully understanding why, she flies across the country to Baltimore....

1932. After the Great War took both her beloved brother and her fiancé, Violet Speedwell has become a "surplus woman," one of a generation doomed to a life of spinsterhood after the war killed so many young men. Yet Violet cannot reconcile herself to a life spent caring for her grieving, embittered mother. After countless meals of boiled eggs and dry toast, she saves enough to move out of her mother's place and into the town of Winchester, home to one of England's grandest cathedrals.

Single mom Robyn Caldwell needs a new plan for her future. She has always put her family first. Now, with her kids grown, she yearns for a change. But what can she do when her daughter has become the most demanding bride ever, her son won’t even consider college, her best friend is on the brink of marital disaster and her ex is making a monumentally bad decision that could ruin everything?