Welcome to the most tumultuous summer of the 20th century. 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.

Hollis Shaw, creator of the popular food blog, Hungry with Hollis, is shocked when her heart surgeon husband, Matthew, is killed in a one-car accident on a snowy morning. The cracks in Hollis’s perfect life—her strained marriage and her complicated relationship with her daughter, Caroline—grow deeper. So when Hollis hears about something called a “Five-Star Weekend”—one woman organizes a trip for her best friend from each phase of her life: her teenage years, her twenties, her thirties, and midlife—she decides to host her own Five-Star Weekend on Nantucket.

On a perfect June day, 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.

When Mallory Blessing's son, Link, receives deathbed instructions from his mother to call a number on a slip of paper in her desk drawer, he's not sure what to expect. But he certainly does not expect Jake McCloud to answer. It's the late spring of 2020 and Jake's wife, Ursula DeGournsey, is the frontrunner in the upcoming Presidential election. There must be a mistake, Link thinks. How do Mallory and Jake know each other?

Irene Steele shares her idyllic life in a beautiful Iowa City Victorian house with a husband who loves her to sky-writing, sentimental extremes. But as she rings in the new year one cold and snowy night, everything she thought she knew falls to pieces with a shocking phone call: her beloved husband, away on business, has been killed in a helicopter crash. Before Irene can even process the news, she must first confront the perplexing details of her husband's death on the distant Caribbean island of St. John.

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.

Lily Bishop wakes up one morning to find a good-bye note and divorce papers from her husband on the kitchen counter. Having just moved to Alabama for his job only weeks before, Lily is devastated. New to town and knowing no one, Lily finds herself in desperate need of a job and a new place to live. When Lily hears that a hair stylist is needed at small retirement community, she decides to apply.

Belle likes to think herself immune to the dizzying effects of fabulous wealth. But when her best friend, Summer, invites her on a glamorous getaway to the Mediterranean aboard her billionaire boyfriend's yacht, the only sensible answer is yes. Belle hopes the trip will be a much-needed break from her stalled acting career and uniquely humiliating waitressing job, but once she's aboard the luxurious Lion's Den, it soon becomes clear this jet-setting holiday is not as advertised.

The eccentric millionaire Robert “Bobby” Ayers has disappeared again, this time alone on his 60-foot luxury sailboat. Behind him he leaves the wreckage of a controversial life - three ex-wives, angry creditors, and the shadow of a murder in his past. He travels the endless expanse of the Pacific cloaked in stealth, only to meet his future there in the form of a young woman more mysterious than he is.

One night in Monaco, my best friend, Maxence, disappeared from the middle of the Monte Carlo casino like blowing away a breath of smoke. I have no idea what Maxence was doing in Monaco that night. Yeah, he loves the Monte Carlo casino - the stage of British spy movies, billionaires, Russian mafia, and roulette. But too many people in Monaco think he might be a danger to them. He never should have been there. But he was. And so was Simone.

The Bayou is a unique place to live and it provides a grit and passion to any who hail from it, including Cain Lemaire, an ex-Secret Service agent from New Orleans. Cain had the dream job he had always wanted, protecting the President, until a single night resulted in a scandal that lost him his post. Needing a new direction for his life and with help from his sister who works in Japan, Cain takes a job in Tokyo as head of security detail for a very successful and important CEO.

A tropical paradise destroyed by hurricanes. Converted into an open-air prison. The perfect place for undesirables. The American dream is a mirage. The gap between the haves and the have-nots is wider than ever before. In 2050, people struggle for their piece of a shrinking pie. In 2050, the seeds of discontent are growing. The elites will stop at nothing to maintain their dominance. But the people are awakening to the rigged game. And they’re very, very angry.

Mira is a mermaid on a mission. It’s time to leave the ocean. Mira Belshaw has been at sea for...well, she doesn’t know how many years. It’s hard to keep track of time when you live in the ocean. But after enough time, the salt water triggers the desire to procreate, and her time is up. Finding a mate is the most important thing to her right now, and to do that, she has to return to the place where she was last human - the coastal city of Saltford.

Nearly a century ago, a treasure of unimaginable value was lost beneath the tropical waters of the Florida Keys. But when a ruthless real-estate developer threatens Shark Key Campground and Marina, former journalist Kate Kingsbury must find it before her friends and neighbors lose the only homes they know. It’s taken Kate Kingsbury two years to find peace after her husband was killed in a home invasion. Now she’s found her refuge, living the free and easy boat life at Shark Key. Except that nothing in life is free. Or easy.

Chase Gordon has the life. The former marine works part-time as a bartender to support his life island-hopping on his 40-foot sailboat. When the pretty young wife of one of his fellow marines shows up looking for her husband, Chase steps in to help her out. Immediately, he finds himself in a stand-off between one of South Florida's most dangerous drug dealers and the DEA. Now, he's left wondering what kind of trouble his friend might be facing. Can Chase even save him?