Life coach Tara's situation certainly seems perfect—she enjoys a booming career, great house, exotic vacations and flashy sports car to match. But most important of all, a happy home with Glenn. Glamorous London PR specialist Natalie has achieved success in everything she's ever set her mind to—except relationships. When the two strike up an unlikely friendship during a stay at the same tropical beach resort, Tara agrees to coach Natalie toward landing the man of her dreams.

A group of college friends on the verge of summer graduation wonder about what the future holds; marriage and motherhood; world domination; or a better life elsewhere? One thing they do know is that they'll always be friends. But before life takes them in different directions, they make a pact to reunite in five years to see how their predictions turned out.

Following a painful breakup, Abby protects her emotions by hiding from life, until a head injury causes her brain to start losing new memories. Determined to fight it, Abby sets out to prove her diagnosis wrong by grabbing life with both hands. She’ll save her memory by embarking on a list of experiences that will be simply unforgettable. All seems to be working well, until a trip of a lifetime to New York City, where she bumps into a friendly stranger called Finn. But is he a stranger after all?

Eve knows what she wants. After nine good years and two kids together, it's about time Liam made an honest woman of her. Eve's sister Sam knows more than she should. She's always thought Eve was too good for Liam. And when she learns the truth about his numerous business trips abroad, her suspicions are confirmed. Brooke, literally a world away, knows nothing. Until one day, a mysterious delivery arrives and promises to change her life forever.

When Ethan Greene lost his wife, he never thought he would be able to replace her, until one woman stepped in and showed him how to be happy again. Now, on a romantic Christmas trip to New York City, he has a plan to show Vanessa just how important she is to him and maybe even to give his daughter, Daisy, a complete family again. He's going to propose with a perfect ring from Tiffany's.

Nisha Cantor lives the globetrotting life of the seriously wealthy, until her husband announces a divorce and cuts her off. Nisha is determined to hang onto her glamorous life. But in the meantime, she must scramble to cope--she doesn’t even have the shoes she was, until a moment ago, standing in. That’s because Sam Kemp—in the bleakest point of her life—has accidentally taken Nisha’s gym bag. But Sam hardly has time to worry about a lost gym bag—she’s struggling to keep herself and her family afloat.

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.

You’ve been excited about this getaway for months–at last, a chance to reconnect with your husband at a secluded island resort. But when he unexpectedly calls you from the beach, you hear the urgency in his voice. Something is very wrong. The beautiful waitress from the restaurant last night has been found lying dead in the sand. And the police want to question your husband about it. Sure, you saw him glance at her over dinner a few times, but you know he didn’t have anything to do with the poor girl’s death.

Fresh off a bad breakup with a longtime boyfriend, Nantucket sweetheart Lizbet Keaton is desperately seeking a second act. When she’s named the new general manager of the Hotel Nantucket, a once Gilded Age gem turned abandoned eyesore, she hopes that her local expertise and charismatic staff can win the favor of their new London billionaire owner, Xavier Darling, as well as that of Shelly Carpenter, the wildly popular Instagram tastemaker who can help put them back on the map.

A kid walks into your bookstore and says to you, Guess what? I'm your son. The one you put up for adoption seventeen years ago. The one you never told anyone about. Surprise! His name is Matthew Walker, and he's come to spend the summer on the Cape with his parents. Why? Well, he wants to meet you before he heads off to college in the fall. Tiny detail—he didn't tell his adoptive parents about his plan. And while you hoped this day would come someday, you're so stunned, you actually faint.

Lily Bradley is a respected psychotherapist married to a distinguished professor. They live in a dream house with their two children in close-knit Story Cove. Lily lives a well-ordered life. Or so it seems. As a therapist, she knows everyone keeps things hidden. Even her. Then sensual and free-spirited Arwen Harper rolls into town in her hand-painted VW van, her sixteen-year-old son riding shotgun. Overnight, Story Cove’s secrets are no longer safe. Because Arwen might know her new neighbors better than they know themselves.

The white-washed Italian villa is perfect. I thought it might feel odd, living in a stranger’s house for the summer, but as my husband and children swim in the infinity pool, I start to relax. And then, in the back of a wardrobe, I find something that shatters everything.... Sparkling green eyes, square jaw, lopsided smile. A young man with his arm around a beautiful woman. The picture is old and faded, but I’d recognize him anywhere. The man is my husband.

Jen Weinstein and Lauren Parker rule the town of Salcombe, Fire Island every summer. They hold sway on the beach and the tennis court, and are adept at manipulating people to get what they want. Their husbands, Sam and Jason, have summered together on the island since childhood, despite lifelong grudges and numerous secrets. Their one single friend, Rachel Woolf, is looking to meet her match, whether he’s the tennis pro. But even with plenty to gossip about, this season starts out as quietly as any other. Until a body is discovered, face down, off the side of the boardwalk.

Gemma Ballantine is getting ready for work one morning when her eldest child comes running down the stairs saying the words every mother dreads. The front door is open. And her six-year-old daughter has disappeared. Frantic with fear, Gemma starts a nail-biting search for her little girl. After what feels like forever, her mother-in-law, Diane, finds Katie wandering lost a few streets away. Relieved to have her youngest child back in her arms, breathing in the sweet scent of her hair, Gemma thinks the nightmare is over. But then her perfect family starts to fall apart....

After the sudden death of her husband, Kate Turner is looking for a fresh start for herself and her teenage daughter, Alex. They relocate to the beachside town of Shoreham, Florida, where all is not as sunny as it seems. Although Kate makes fast friends with a trio of fellow moms, their daughters take an instant dislike to Alex, who attempts to document their bullying in her video diary. Kate brushes off Alex’s concerns—until she receives a series of chilling warnings about the clique of moms from other parents and neighbors.