For Esther, it’s proving hard not to feel bitter watching Lucas enjoying his successful career, not to mention the attentions of his gorgeous, intelligent, and predictably younger lover. She meanwhile is struggling to forge a new life for herself, navigating the pitfalls of modern dating, while trying not to despair at the cost of living as a single woman of a certain age. Then Lucas faces a shattering accusation at the same time as their children Dylan and Lily, start to implode.

On a normal day, in a normal house, on a normal street, wife and mother Fran has had enough. She packs a case, leaves a note for her bullying husband, Pete, and one for her beloved 21-year-old son, Harry, and heads to the airport - and freedom. In another house, on another street, Helena is desperately baiting her husband, Jack, into a fight. These days it feels like the only way to get Jack to take notice of her. Passionate, volatile, increasingly fragile, Helena is fast running out of hope.

Everyone that meets Kat Keating is mesmerised. Beautiful, smart and charming, she is everything a good girl should be. Her sister Eleanor, on the other hand, knows she can't compete with Kat. On the awkward side of tall, clever enough to be bullied, and full of the responsibilities only an older sibling can understand, Eleanor grows up knowing she’s not a good girl.

Life in Dublin hasn't worked out quite as planned for friends Melissa, Steph and Eilis. Melissa has a successful career, but she's a mess of insecurities. Steph is lonely, walking on eggshells around her philandering husband and angry teenage daughter. And Eilis, an A&E doctor, is just going through the motions with her long-term partner, Rob. Is it ever too late to take charge and live your life on your terms?

Tress Walker waved her perfect husband Max off to work, with no idea that she was about to go into labour with their first child. And completely unaware that when she tried to track Max down, he wouldn’t be where he was supposed to be. At the same time, Max’s best friend Noah Clark said goodbye to his wife, Anya, blissfully oblivious that he would soon discover the woman he adored had been lying to him for years. And living alongside the two couples, their recently widowed friend, Nancy Jenkins, is getting ready to meet Eddie, her first true love at a school reunion.

When Jessie left home at eighteen, she swore she’d never go back. But when life takes a turn for the complicated, she’s forced to move in with her twin, Isaac, and his two best friends. To her dismay, one of these is Elliot, the boy Jessie once loved, until his life was changed forever by a terrible accident that Jessie still blames herself for.

When she was 9 years old, Melody Browne's house burned down, and it took all of her childhood memories with it. Now she's a single mother of a teenage boy living in Central London. She hasn't seen her parents since she left home at 15, but she doesn't mind. She's better off on her own. She works as a dinner lady at her son's school and has no idea where her humdrum life is heading. But one summer's night, a hypnotist inadvertently unlocks memories of her childhood, and her whole life is turned upside down.

I didn’t plan to fall pregnant, but when I found out, I was overjoyed. Even though I’d be going it alone, I swore I’d give my baby everything they needed. But I didn’t know who the man I met on that sweltering summer night, the father of my child, really was. I decided to keep his secret to protect the innocent…but then my beautiful baby was born with a rare illness, desperately needing a transplant.

When Elizabeth Keane returns to Ireland after her mother’s death, she’s focused only on saying goodbye to that dark and dismal part of her life. Her childhood home is packed solid with useless junk, her mother’s presence already fading. But within this mess, she discovers a small stash of letters — and ultimately, the truth. Forty years earlier, a young woman stumbles from a remote stone house, the night quiet except for the constant wind that encircles her as she hurries deeper into the darkness away from the cliffs and the sea.

Biddy Weir is a quirky girl. Abandoned by her mother as a baby, and with a father who's not quite equipped for the challenges of modern parenting, Biddy lives in her own little world, happy to pass her time painting by the sea and watching the birds go by. That is, until she meets Alison Flemming. Because there are a few things about Biddy that aren't normal, you see. And Alison isn't afraid to point them out to the world. All of a sudden, Biddy's quiet life is thrown into turmoil. If only there was someone to convince her that, actually, everyone's a little bit weird....

In weekly phone calls to his daughter in Australia, widower Hubert Birdpaints a picture of the perfect retirement, packed with fun, friendship, and fulfillment. But it's a lie. In reality, Hubert's days are all the same, dragging on without him seeing a single soul. Until he receives some good news - good news that in one way turns out to be the worst news ever, news that will force him out again, into a world he has long since turned his back on.

As Nora and her British Army officer husband, Gordy, pack up yet another home and leave the sun of Cyprus for the drizzle of England, she can’t shake a feeling of regret—at her failure to follow her own dreams, but also, if she’s honest, at having ended up an officer’s wife at all, drifting through a life of temporary homes and temporary relationships.

When Avery Beckett is proposed to by Jude Masters, a widowed father and the man she loves, it should be a time of great joy. Instead, Avery is on edge. She’s wary of the idea of family, doubtful of happy endings, and too afraid to take the leap. It’s the kind of fear that comes from having secrets. Before Avery commits to a new life, she must reconcile with the one she left behind.

When their last embryo is accidentally given to another woman, Quinn and James reminisce about the child they gave up 4 years prior... All Quinn has ever wanted is to be a mother. Although her husband James brings her comfort, the knowledge they have no embryos left, and that their child is out there being raised by another family, is tearing them both apart. When the clinic tells Quinn and James they have the right to spend time with little Emily, at first they hesitate. Of course, they would never want to come between Emily and her loving family.

Forty-one years old, the last of her friends to marry, and down to a size 12, Lauren Leo is in her gown and about to tie the knot. There’s just one thing missing: the groom. With one blindsiding text, Lauren is unceremoniously dumped at the altar. In the aftermath, her mother is an endless well of unsolicited advice (Stay on your diet and freeze your eggs). Her sisters only add to the Great Humiliation: one is planted on Lauren’s couch while the other is too perfect.