Barbara - a child of the Blitz - has more secrets than she cares to admit. She has protected her children from the harsh realities of life and told them little of the poverty of her childhood, nor of the darker side of her marriage to one of Britain's most famous photographers. With such an incomplete picture, her youngest, Sophie, has struggled to understand who her parents really are, and in turn, Barbara sometimes worries, to build her own identity.

It’s the summer of 1990 and seventeen-year-old Dawn is infatuated with Billy. He’s cool, in a band and the opposite of her other besotted admirer: gentle electrician Rob. But then Billy disappears, and Rob is still around. He's there when Dawn falls pregnant and he’s there for the sleepless nights. And though Dawn and Rob were never destined to be together, suddenly they’re married. This real-life relationship involves arguing about who loads the dishwasher, cosy nights in while not having sex (and not missing it) and dragging kids to violin classes (even though they’re terrible).

Alice has been lying to herself for years, holding fast to the belief that the needs of her family far outweigh her own. But her outwardly successful marriage hides dark secrets, and for much of her life the children were the only reason she stuck around. These days, though her successful banker son lives nearby, his young wife seems to do everything she can to keep Alice at bay. As for Alice's other son, he has always been something of a stranger and has been traveling for so long that Alice isn't even sure what continent he is on anymore.

Hannah is 38 and the happily married mother of 11-year-old Luke. Her marriage is reassuringly stable and after 15 years she has managed to push the wild dreams of youth from her mind and concentrate on the everyday satisfactions of here and now. The first half of her life hasn’t been as exciting as she had hoped, but then, she reckons, whose has? When she succeeds in convincing husband Cliff to rent a villa in the south of France for a summer vacation with her sister Jill and gay friend Tristan, she’s expecting little more than a pleasant few weeks with her family.

At thirty-three, nurse Heather is desperately waiting for her romantic life to begin. Then she meets handsome, strong Anthony and is sure she’s found the one. Brushing any doubts aside, she projects all her hopes for true love onto him. Meanwhile, at a yoga retreat in Spain, happy-go-lucky Joe can’t believe his luck when he meets vivacious, witty Amy. She’s the sharpest, most beautiful woman he has ever dated, and the fact that she’s interested in him feels like a dream come true.

Ruth’s childhood was a happy one, and her family—on her mother’s side—large and loving. But her father’s French origins have always remained a mystery. Now, with aged relatives beginning to die, Ruth decides to research her father’s family before it’s too late. When she discovers a series of long-lost cassettes, everything she thought she knew about them shatters. The tapes expose an unimaginable truth–an epic wartime story of hidden love and sacrifice, stretching back to occupied France.

When Catherine learns that she is dying, she remembers the words her husband once jokingly uttered and decides to leave him the ultimate posthumous gift: a time capsule containing photographs of their life together along with tape recordings in which she recounts every secret she ever kept, every unspoken thought whether loving or treacherous - the things they never said.

Becky’s father is not just absent: he’s a total mystery, a hole in her life. He died before she was born and for her mother, Laura, the subject is strictly off-limits. When Laura books a spontaneous trip to Greece, Becky decides to join her, determined to get closer to her mother - and to the truth. But as they make their way to the island of Santorini, it becomes clear that this holiday is not as impulsive as Becky thought. Laura’s hiding something from her daughter - and she’s been hiding it for Becky’s whole life.

Daisy Harrop has always felt like she exists in the background, and since her mother stopped getting out of bed, her life has come to a complete standstill. Daisy would give anything to leave the shabbiest house on the street and be more like the golden Kelleways next door, with their perfectly raked driveway and flourishing rose garden… Winnie Kelleway is proud of the beautiful family she’s built. They’ve had their ups and downs—hasn’t everyone? But this weekend, celebrating her golden wedding anniversary is truly proof of their happiness, a joyful gathering for all the neighbours to see.

Esme has run the guest house for as long as anyone in Ballycove can remember. But in her declining years, her sight is failing, and when she has a fall on the eve of the summer season, she is forced to take a back seat for the first time in her life. From her chair in the entry hall, not much passes Esme by. There's Cora, the wife visiting indefinitely... without her husband; Niamh, the city professional with a life-changing decision to make; and Phyllie, the grandmother whose family is slipping away from her.

When Nick’s wife Kerry falls ill and dies, he realises for the first time how fragile his happiness has always been, and how much he’s been taking his good life and wonderful family for granted. Now, he suddenly finds himself navigating parenthood alone, unsure how to deal with his own grief, let alone that of his teenage son, Olly.

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.

1984. Bessie is a confident sixteen-year-old girl with the world at her feet, dreaming of what life will bring and what she’ll bring to this life. Then everything comes crashing down. Her bright and trusting smile is lost, banished by shame - and a secret she’ll carry with her for the rest of her life. 2021. The last thirty-seven years have not been easy for Bess. At fifty-three she is visibly weary, and her marriage to Mario is in tatters. Watching her son in newlywed bliss - the hope, the trust, the joy - Bess knows it is time to face her own demons.

It’s been a decade since Trumanell Branson disappeared, leaving only a bloody handprint behind. Her pretty face still hangs like a watchful queen on the posters on the walls of the town’s Baptist church, the police station, and in the high school. They all promise the same thing: We will find you. Meanwhile, Tru's brother, Wyatt, lives as a pariah in the desolation of the old family house, cleared of wrongdoing by the police but tried and sentenced in the court of public opinion and in a new documentary about the crime.

Alicia Berenson’s life is seemingly perfect. A famous painter married to an in-demand fashion photographer, she lives in a grand house with big windows overlooking a park in one of London’s most desirable areas. One evening, her husband, Gabriel, returns home late from a fashion shoot, and Alicia shoots him five times in the face and then never speaks another word. Alicia’s refusal to talk, or give any kind of explanation, turns a domestic tragedy into something far grander, a mystery that captures the public imagination and casts Alicia into notoriety.