It’s 2 a.m. on a Saturday night in the spring of 2001, and 28-year-old Cecily Gardner sits alone in a dive bar in New York’s East Village, questioning her life. Feeling lonesome and homesick for the Midwest, she wonders if she’ll ever make it as a reporter in the big city - and whether she made a terrible mistake in breaking up with her longtime boyfriend, Matthew. As Cecily reaches for the phone to call him, she hears a guy on the barstool next to her say, “Don’t do it - you’ll regret it.” Something tells her to listen.

Six years after the fight that ended their friendship, Daphne Berg is shocked when Drue Cavanaugh walks back into her life, looking as lovely and successful as ever, with a massive favor to ask. Daphne hasn’t spoken one word to Drue in all this time - she doesn’t even hate-follow her ex-best friend on social media - so when Drue asks if she will be her maid-of-honor at the society wedding of the summer, Daphne is rightfully speechless.

Lisa Hawley is perfectly satisfied living on her own. Having fully recovered from a brutal divorce nearly two decades earlier, she has successfully raised her kids, Juliet and Theo, seeing them off to college and beyond. As the owner of a popular boutique on Nantucket, she’s built a fulfilling life for herself on the island where she grew up.

Conley Hawkins left her family’s small town newspaper, The Silver Bay Beacon, in the rearview mirror years ago. Now a star reporter for a big-city paper, Conley is exactly where she wants to be and is about to take a fancy new position in Washington, DC. Or so she thinks. When the new job goes up in smoke, Conley finds herself right back where she started, working for her sister, who is trying to keep The Silver Bay Beacon afloat - and she doesn’t exactly have warm feelings for Conley. Soon, she is given the unenviable task of overseeing the local gossip column.

On an island off the coast of Ireland, guests gather to celebrate two people joining their lives together as one. The groom: handsome and charming, a rising television star. The bride: smart and ambitious, a magazine publisher. It’s a wedding for a magazine or for a celebrity: the designer dress, the remote location, the luxe party favors, the boutique whiskey. The cell phone service may be spotty and the waves may be rough, but every detail has been expertly planned and will be expertly executed.

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'd also 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.

Irene Steele's idyllic life - house, husband, family - 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 her husband's death. He was found on St. John, a tropical island 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. Investigating, she is plunged into a web of intrigue and deceit belied by the pristine white sand beaches of St. John.

Margot Lee’s mother, Mina, isn’t returning her calls. It’s a mystery to 26-year-old Margot, until she visits her childhood apartment in Koreatown, LA, and finds that her mother has suspiciously died. The discovery sends Margot digging through the past, unraveling the tenuous invisible strings that held together her single mother’s life as a Korean War orphan and an undocumented immigrant, only to realize how little she truly knew about her mother.

Claire Cook has a perfect life. Married to the scion of a political dynasty, with a Manhattan townhouse and a staff of 10, her surroundings are elegant, her days flawlessly choreographed, and her future auspicious. But behind closed doors, nothing is quite as it seems. That perfect husband has a temper that burns as bright as his promising political career, and he's not above using his staff to track Claire's every move, making sure she's living up to his impossible standards. But what he doesn't know is that Claire has worked for months on a plan to vanish.   

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.

Augustus Everett is an acclaimed author of literary fiction. January Andrews writes best-selling romance. When she pens a happily ever after, he kills off his entire cast. They're polar opposites. In fact, the only thing they have in common is that for the next three months, they're living in neighboring beach houses, broke, and bogged down with writer's block.

The Lakey sisters are perfect opposites. After their mother died and their father was lost in grief, Willa had no choice but to raise her sister, Harper, and their brother, Lucas. Then, as an adult, she put her own life on hold to nurse Harper through a terrifying illness. Now that Harper is better and the sisters are living as roommates, Willa has realized her dream of running her own bakery and coffee shop, bringing her special brand of caretaking to the whole Oceanside community.

Birdie Cousins has thrown herself into the details of her daughter Chess's lavish wedding, from the floating dance floor in her Connecticut back yard to the color of the cocktail napkins. Like any mother of a bride-to-be, she is weathering the storms of excitement and chaos, tears and joy. But Birdie, a woman who prides herself on preparing for every possibility, could never have predicted the late-night phone call from Chess, abruptly announcing that she's cancelled her engagement.

It's wedding season on Nantucket. The beautiful island is overrun with summer people - an annual source of aggravation for year-round residents. When one lavish wedding ends in disaster before it can even begin - with the bride-to-be discovered dead in Nantucket Harbor just hours before the ceremony - everyone in the wedding party is suddenly a suspect. As Chief of Police Ed Kapenash digs into the best man, the maid of honor, the groom's famous mystery novelist mother, and even a member of his own family, the chief discovers that every wedding is a minefield - and no couple is perfect.

Single mom Ellen Fox couldn't be more content - until she overhears her son saying he can't go to his dream college because she needs him too much. If she wants him to live his best life, she has to convince him she's living hers. So Unity Leandre, her best friend since forever, creates a list of challenges to push Ellen out of her comfort zone. Unity will complete the list, too, but not because she needs to change. What's wrong with a thirtysomething widow still sleeping in her late husband's childhood bed?