Twenty years ago, Ellie Enderlin's sister, Lila, a brilliant mathematician, was murdered in a crime that was never solved. In the aftermath of her sister's death, Ellie entrusted her most intimate feelings to a man who turned the story into a best-selling true crime book - a book that both devastated her family and identified one of Lila's professors as the killer. Decades later, Ellie receives a piece of evidence never found with her sister's body: Lila's notebook.

Dr. Julie Walker wakes on a summer morning in San Francisco to find a city in chaos. Today Californians are voting on a controversial ballot initiative that will change history. With the future of the state and the nation uncertain, the streets have erupted into violence. Injured, Julie must make her way across the city by foot to the Veterans Administration Hospital, where her sister, recently returned from Afghanistan, is in labor. At the hospital a brutal scene is unfolding as a man who shares an intimate past with Julie begins to take his revenge.

Christine and Jessica cross paths working at the advertising agency Christine runs with her husband. These two women are about to uncover the dark secrets of their own traumatic pasts. But they have no idea that they are connected. The shocking truth of what happened at the wedding all those years ago, and what became of Margaret, is going to blow their lives apart in more ways than each of them could ever have imagined....

She bursts into my life like a storm, and nothing is the same again. One by one, I watch as my friends fall under her spell. Only I see that her smiles don’t reach her cold, furious eyes. And when I’m accused of things I didn’t do, when my home is vandalized, I know she’s behind it. But she only lets her mask slip when no one is looking, so if I say anything, I’ll look crazy. So when the baby shower comes around, I’m sitting on a velvet sofa in a posh hotel room, surrounded by balloons. But that afternoon, I finally learn the unbelievable truth. There is no baby....

My darling son, Sam, is marrying his childhood sweetheart, and I couldn’t be prouder of the man he’s grown into. Walking out on his abusive father all those years ago was the best thing I ever did. And today he stands, tall and handsome, saying "I do" to my dream daughter-in-law. If I hadn’t pushed them together all those years ago, he might never have found a girl as perfect as Lauren. It’s true what they say, mother always knows best. 

Elodie Fray wants to be more like her perfect sister, Ada, the one her parents are actually proud of. When she decided to quit her job and pursue her dream of becoming an author, she thought it would be her time to shine, but a year on nothing has happened. And she's getting desperate. When Elodie makes one small mistake on a drunken night with a friend, things quickly spiral and suddenly everyone believes she has a book deal. Unable to find a way back from her little lie, her perfect dream becomes a perfect nightmare - and desperate times call for desperate measures.

In the quiet village of Helesbury, Miranda Wallace prides herself on being the most popular member of her small social circle; the perfect friend, the best mum - the queen bee. Until one day, Verity arrives. Cool and indifferent, Verity is everything Miranda isn’t, but she threatens to shatter Miranda’s picture-perfect life. Suddenly plagued with insecurities, Miranda is certain Verity is hiding something. And Miranda knows all about secrets and the damage they can cause, because she’s hiding some of her own. 

What if they hadn't gone? That's the question Clementine can't stop asking herself. It was just a backyard barbeque. They didn't know their hosts that well. They were friends of friends. They could so easily have said no. But she and her husband, Sam, said yes, and now they can never change what they did and didn't do that beautiful winter's day. Six responsible adults. Three cute kids. One yapping dog. It's a normal weekend in the suburbs. What could possibly go wrong?

Esme is a start-up success who runs her own successful media company and heads up a series of investigative podcasts. She also has a beautiful home, where she lives with her sister, Michelle, and her son, Zachary. Sure, there’s an ex-husband hanging around - Owen likes to pop round a bit too often - but everything is civilised and amicable. She has life all tied up. But Esme knows that any successful podcaster is only as good as her last story, so she sets out on a new series of interviews to get to the truth behind Simone Fischer’s high-profile murder of her husband. 

When pregnant Saffron Cutler moves into 9 Skelton Place with boyfriend Tom and sets about renovations, the last thing she expects is builders uncovering a body - two bodies, in fact. Forensics indicate the bodies have been buried at least 30 years. Nothing Saffy need worry herself over. Until the police launch a murder investigation and ask to speak to the cottage's former owner - her grandmother, Rose. Rose is in a care home, and Alzheimer's means her memory is increasingly confused. She can't help the police, but it is clear she remembers something.

Alison is a marriage mender. Her job is to help couples who fear they have reached the end of the road. So when her husband's ex, Lydia, arrives on the doorstep demanding to see her son, Alison thinks she can handle it. But what Alison doesn't realise is that Lydia is the one person who has the ability to destroy their happy family. And sometimes the cracks run too deep to ever be repaired.

Ellen was just trying to help a stranger. That was how it started: giving a few minutes respite to a flustered young mother sitting opposite her on the train. A few minutes holding her baby while the mother makes an urgent call. The weight of the child in her arms making Ellen's heart ache for what she can never have. Five minutes pass. Ten. The train pulls into a station and Ellen is stunned to see the mother hurrying away down the platform without looking back.

Back in the long ago '90s, Rachel Walsh was a mess. But a spell in rehab transformed everything. Life became very good, very quickly. These days, Rachel has love, family, a great job as an addiction counsellor, she even gardens. Her only bad habit is a fondness for expensive trainers. But with the sudden reappearance of a man she'd once loved, her life wobbles. She'd thought she was settled. Fixed forever. Is she about to discover that no matter what our age everything can change? Is it time to think again, Rachel?

Six-year-old Helen and Ellie are identical twins, but Helen is smarter, more popular, and their mother's favorite. Ellie, on the other hand, requires special instruction at school, is friendless, and is punished at every turn. Until they decide to swap places - just for fun, and just for one day - and Ellie refuses to switch back. Everything of Helen's, from her toys to her friends to her identity, now belongs to her sister.

It's every parent's nightmare. Your happy, funny, innocent son commits a terrible crime: murdering a complete stranger. You don't know who. You don't know why. You only know your teenage boy is in custody and his future lost. That night you fall asleep in despair. Until you wake...and it is yesterday. Every morning you wake up a day earlier, another day before the murder. Another chance to stop it. Somewhere in the past lie the answers, and you don't have a choice but to find them.