Vivian Howe, author of 13 beach novels and mother of three nearly grown children, is killed in a hit-and-run car accident while jogging near her home on Nantucket. She ascends to the Beyond where she's assigned to a Person named Martha, who allows Vivi to watch what happens below for one last summer. Vivi also is granted three “nudges” to change the outcome of events on earth. From the Beyond, she watches “The Chief” Ed Kapenash investigate her death, but her greatest worry is her final book, which contains a secret from her own youth that could be disastrous for her reputation. But when hidden truths come to light, Vivi’s family will have to sort out their past and present mistakes --- with or without a nudge of help from above --- while Vivi finally lets them grow without her.

After uprooting her life in the States, Irene Steele has just settled in at the villa on St. John where her husband, Russ, had been living a double life. But a visit from the FBI shakes her foundations, and Irene once again learns just how little she knew about the man she loved. With help from their friends, Irene and her sons set up their lives while evidence mounts that the helicopter crash that killed Russ may not have been an accident. Meanwhile, the island watches this drama unfold --- including the driver of a Jeep with tinted windows who seems to be shadowing the Steele family. As a storm gathers strength in the Atlantic, surprises are in store for the Steeles: help from a mysterious source, and a new beginning in the paradise that has become their home.

The year is 1975. Elle Sheen --- a single mother who is supporting herself and her six-year-old African-American son, Dylan, as a waitress at the Noel Street Diner --- isn’t sure what to make of William Smith when his appearance creates a stir in the small town of Mistletoe, Utah. As their lives unexpectedly entwine, Elle learns that William, a recently returned Vietnam POW, not only is fighting demons from his past, but may also have the answer to her own secret pain --- a revelation that culminates in a remarkable act of love and forgiveness.

A year ago, Irene Steele had the shock of her life: her loving husband, father to their grown sons and successful businessman, was killed in a helicopter crash. But that wasn't Irene's only shattering news: he also had been leading a double life on the island of St. John, where another woman loved him, too. Now Irene and her sons are back on St. John, determined to learn the truth about the mysterious life --- and death --- of a man they thought they knew. Along the way, they're about to learn some surprising truths about their own lives, and their futures.

It's 1969, and for the Levin family, the times they are a-changing. Every year the children have looked forward to spending the summer at their grandmother's historic home in downtown Nantucket. But like so much else in America, nothing is the same. Blair, the oldest sister, is marooned in Boston, pregnant with twins and unable to travel. Middle sister Kirby, caught up in the thrilling vortex of civil rights protests and determined to be independent, takes a summer job on Martha's Vineyard. Only-son Tiger is an infantry soldier, recently deployed to Vietnam. Thirteen-year-old Jessie suddenly feels like an only child, marooned in the house with her out-of-touch grandmother and her worried mother, each of them hiding a troubling secret.

Irene Steele's idyllic life is shattered when she is woken up by a late-night phone call. Her beloved husband has been found dead, but before Irene can process this tragic news, she must confront the perplexing details of his death. He was found on St. John island, a tropical paradise far removed from their suburban life. Leaving the cold winter behind, Irene flies down to the beautiful Caribbean beaches of St. John only to make another shocking discovery: her husband had a secret second family. As Irene investigates the mysterious circumstances of her husband's death, she is plunged into a web of intrigue and deceit belied by the pristine white sand beaches of St. John's.

Two years after the end of World War II, a minor traffic accident brings together Eleanor Moskowitz and Patricia Bellamy. Eleanor, a teacher and recent Vassar graduate, needs a job. Patricia’s difficult 13-year-old daughter Margaux, recovering from polio, needs a private tutor. Though she feels out of place in the Bellamys’ rarefied and elegant Park Avenue milieu, Eleanor forms an instant bond with Margaux. Invited to keep Margaux company at the Bellamys’ country home, Eleanor meets Patricia’s unreliable, bohemian brother, Tom. The spark between them is instant and intense. As the summer wears on, the two women’s friendship grows. Until a line is crossed, and both Eleanor and Patricia will have to make important decisions --- choices that will reverberate through their lives.

The Otis-Winbury wedding promises to be an event to remember: the groom's wealthy parents have spared no expense to host a lavish ceremony at their oceanfront estate. But it's going to be memorable for all the wrong reasons after tragedy strikes: a body is discovered in Nantucket Harbor just hours before the ceremony --- and everyone in the wedding party is suddenly a suspect. As Chief of Police Ed Kapenash interviews the bride, the groom, the groom's famous mystery-novelist mother, and even a member of his own family, he discovers that every wedding is a minefield --- and no couple is perfect.

It's been too long since the entire Quinn family has been able to celebrate the holidays under the same roof, but that's about to change. With Bart back safe and sound from Afghanistan, the Quinns are preparing for a holiday more joyous than any they've experienced in years. And Bart's safe return isn't the family's only good news. Kevin is enjoying married life with Isabelle; Patrick is getting back on his feet after paying his debt to society; Ava thinks she's finally found the love of her life; and Kelley is thrilled to see his family reunited at last. But it just wouldn't be a Quinn family gathering if things went smoothly.

Nantucket is only 11 miles away from Martha's Vineyard. But they may as well be worlds apart for estranged twin sisters Harper and Tabitha Frost. After not speaking for more than a decade, Harper and Tabitha switch islands --- and lives --- to save what's left of their splintered family. But the twins quickly discover that the secrets, lies and gossip they thought they'd outrun can travel between islands just as easily as they can. Will Harper and Tabitha be able to bury the hatchet and end their sibling rivalry once and for all? Before the last beach picnic of the season, there will be enough old resentments, new loves and cases of mistaken identity to make this the most talked-about summer that Martha's Vineyard and Nantucket have experienced in ages.