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....

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.

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?

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.

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.

The plane is jam-packed. Every seat is taken. So of course the flight is delayed! Flight attendant Allegra Patel likes her job—she’s generally happy with her life, even if she can’t figure out why she hooks up with a man she barely speaks to—but today is her twenty-eighth birthday. She can think of plenty of things she’d rather be doing than placating a bunch of grumpy passengers.

One year ago, Lucy’s sister, Nicki, left to meet friends at a pub in Dublin and never came home. The third Irish woman to vanish inexplicably in as many years, the agony of not knowing what happened that night has turned Lucy’s life into a waking nightmare. So, she’s going to take matters into her own hands. Angela works as a paper-pusher in the Missing Persons Unit, but wants nothing more than to be a fully fledged member of An Garda Síochána, the Irish police force. With the investigation into the missing women stalled, she begins pulling on a thread that could break the case wide open.

It was supposed to be the happiest day of her life. Zoe was sitting in her hotel room, in her perfect white dress, looking forward to the moment when she would make kind, handsome Toby her husband. Then, there was a blank. They said she must have fainted, overcome with emotion. But nothing felt quite right afterward. Did something happen in that missing time?