Imagine that your husband wrote you a letter, to be opened after his death. Imagine, too, that the letter contains his deepest, darkest secret - something with the potential to destroy not just the life you built together, but the lives of others as well. Imagine, then, that you stumble across that letter while your husband is still very much alive....

The Delaneys are fixtures in their community. The parents, Stan and Joy, are the envy of all of their friends. They’re killers on the tennis court, and off it their chemistry is palpable. But after 50 years of marriage, they’ve finally sold their famed tennis academy and are ready to start what should be the golden years of their lives. So why are Stan and Joy so miserable?

Lyn, Cat, and Gemma Kettle, beautiful 33-year-old triplets, seem to attract attention everywhere they go. Together, laughter, drama, and mayhem follow them, but apart, each is dealing with her own share of ups and downs. Lyn has organized her life into one big checklist, Cat has just learned a startling secret about her marriage, and Gemma, who bolts every time a relationship hits the six-month mark, holds out hope for lasting love.

Sophie Honeywell always wondered if Thomas Gordon was the one who got away. He was the perfect boyfriend, but on the day he was going to propose, she broke his heart. A year later, he married his travel agent, while Sophie has been mortifyingly single ever since. Now, Thomas is back in her life because Sophie has unexpectedly inherited his aunt Connie's house on Scribbly Gum Island - home of the famously unsolved Munro Baby mystery.

Alice Love is 29, crazy about her husband, and pregnant with her first child. So imagine Alice’s surprise when she comes to on the floor of a gym and is whisked off to the hospital, where she discovers the honeymoon is truly over - she’s getting divorced, she has three kids, and she’s actually 39 years old. Alice must reconstruct the events of a lost decade and find out whether it’s possible to reconstruct her life at the same time.

Ellen O’Farrell is a professional hypnotherapist who works out of the eccentric beachfront home she inherited from her grandparents. It’s a nice life, except for her tumultuous relationship history. She’s stoic about it, but at this point, Ellen wouldn’t mind a lasting one. When she meets Patrick, she’s optimistic. He’s attractive, single, employed, and best of all, he seems to like her back. Then comes that dreaded moment: He thinks they should have a talk. Braced for the worst, Ellen is pleasantly surprised.

Madeline is a force to be reckoned with. She’s funny, biting, and passionate; she remembers everything and forgives no one. Celeste is the kind of beautiful woman who makes the world stop and stare, but she is paying a price for the illusion of perfection. New to town, single mom Jane is so young that another mother mistakes her for a nanny. She comes with a mysterious past and a sadness beyond her years. These three women are at different crossroads, but they will all wind up in the same shocking place.

"There’s someone I want you to meet," Belle says, as a man draws up to her side. He’s tall with dark hair and stubble on his square jaw. He’s not exactly smiling, but the corner of his mouth curls upwards as he slides his hand around my daughter’s waist.

Olivia McAfee knows what it feels like to start over. Her picture-perfect life—living in Boston, married to a brilliant cardiothoracic surgeon, raising their beautiful son, Asher—was upended when her husband revealed a darker side. She never imagined that she would end up back in her sleepy New Hampshire hometown, living in the house she grew up in and taking over her father’s beekeeping business. Lily Campanello is familiar with do-overs, too. When she and her mom relocate to Adams, New Hampshire, for her final year of high school, they both hope it will be a fresh start.

Owen Pick’s life is falling apart. In his 30s and living in his aunt’s spare bedroom, he has just been suspended from his job as a teacher after accusations of sexual misconduct - accusations he strongly denies. Searching for professional advice online, he is inadvertently sucked into the dark world of incel forums, where he meets a charismatic and mysterious figure. Across the street from Owen lives the Fours family, headed by mom Cate, a physiotherapist, and dad Roan, a child psychologist. But the Fours family have a bad feeling about their neighbor Owen.