In 1903, fishermen find a wrecked boat containing a woman, who has been badly beaten, and a young girl. In 1993, All Hallows is now a boarding school. Following his mother’s death and his father’s hasty remarriage, Lewis Tyler is banished to Dartmoor, stripped of his fashionable clothes, shorn of his long hair and left feeling more alone than ever. There he meets Isak, another lost soul, and whilst refurbishment of the dormitories is taking place, the boys are marooned up in the attic, in an old wing of the school.

In the long, hot summer of 1995, 22-year-old Alice Lang rents a caravan on a holiday park on the outskirts of the lively holiday resort of Severn Sands. She befriends Marnie, a shy, damaged little girl whose father is the park's caretaker and whose mother died a few months earlier. Will, whose mother runs the bar, falls in love with Alice and is unbearably jealous of anyone else she sees. Tensions rise until one evening Alice disappears from her caravan. She's never seen again, and only her scarlet dress is found washed up on the shore.

Scotland, 1949: Caroline Gillan and her new husband, Alasdair, have moved back to Kelly Castle, his dilapidated family estate in the middle of nowhere. Stuck caring for their tiny baby, and trying to find her way with an opinionated mother-in-law, Caroline feels adrift, alone, and unwelcome. But when she is tasked with sorting out the family archives, Caroline discovers a century-old mystery that sparks her back to life. 

Olivia and Luca Felicone have known each other nearly all their lives, but when they fall in love as teenagers and elope, they break the hearts of those closest to them. Luca’s parents run Marinella’s restaurant, the colourful hub in the otherwise bleak seaside town of Watersford, and his mother, Angela, can never forgive Olivia for causing such a rift in her beloved family. On a freezing January night, Olivia’s life is shattered when she learns that Luca has been killed in a car accident.

For more than two centuries, Winterbourne Hall has stood atop a bluff overseeing the English countryside of Cornwall and the sea beyond. In 1947, Londoner Alice Miller accepts a post as governess at Winterbourne, looking after Captain Jonathan de Grey’s twin children. Falling under the de Greys’ spell, Alice believes the family will heal her own past sorrows. But then, the twins’ adoration becomes deceitful and taunting. Their father, ever distant, turns spiteful and cruel. The manor itself seems to lash out. Alice finds her surroundings subtly altered, her air slightly chilled.

Fen works in a bookshop and is devoted to her young son, Connor, but she keeps herself to herself. Haunted by guilt and a terrible secret, Fen lives a compromised life, isolated from her family, far from home and too afraid of the past to risk becoming close to anyone. She is constantly looking over her shoulder, knowing that one day the truth will catch up with her. Sean, on the other hand, is enjoying a seemingly perfect life.

Having escaped to the south coast of Sicily to recover from a broken heart, Sarah is immediately drawn to charming and mysterious Alex. He too is looking for a fresh start after the end of his marriage, and Sarah can’t resist Alex’s offer of a new life together. But when Sarah joins Alex in a tiny Somerset village, something doesn't add up. Alex's beautiful wife, Genevieve, was adored by all who knew her. And by all accounts, she and Alex had a successful marriage complete with a gorgeous son, Jamie. 

Annie Howarth is living an anxious life in an anxious town. Her mining community in South Yorkshire is feeling the pinch, and tensions are running high. Then a murdered girl is found on the moors and the agitation in the community is pushed to a dangerous breaking point. As the wife of the chief of police, Annie should feel safe - her husband, William, can be secretive, but she’s sure whatever he's hiding is for her own good, isn’t it?

When Edie’s mother-in-law, Anna DeLuca, dies, she is relieved. Edie blames Anna for the accident that destroyed her family. So, when her will lures Edie to Sicily and the long-abandoned Villa della Madonna del Mare, she sees through Anna’s games. Suspecting Anna is meddling from beyond the grave to try to reunite her and her ex-husband Joe, Edie is determined to leave Italy as soon as possible. 

The white-washed Italian villa is perfect. I thought it might feel odd, living in a stranger’s house for the summer, but as my husband and children swim in the infinity pool, I start to relax. And then, in the back of a wardrobe, I find something that shatters everything.... Sparkling green eyes, square jaw, lopsided smile. A young man with his arm around a beautiful woman. The picture is old and faded, but I’d recognize him anywhere. The man is my husband.

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....

Emma can’t sleep. It’s been like this since her big 4-0 started getting closer. Her mother stopped sleeping just before her own fortieth birthday. She went mad and did the unthinkable because of it. Is that what’s happening to Emma?

When Nicole Rayburn travels to Lockwood Hall and begins to research Alys’s story for a new book, she discovers startling irregularities in Alys’s case. Nicole’s suspicions mount as every answer leads to more questions. What really happened to Alys? And what became of her son, who disappeared the day she was hanged? Could it be that Alys’s death was the result of a well-planned conspiracy, or is there another, less obvious answer? And who is trying to sabotage Nicole's efforts by stealing her work?

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....

From the outside, my marriage to Zach was perfect: a dream home, a perfect baby girl, and passionate, all-consuming love. But as I cradle my gorgeous baby, I have to accept that the husband who used to be my everything has changed. At first, it was little things: expecting me to keep to a strict schedule, picking out my clothes for me. Now, he controls every aspect of my life: from how much money I have, to when I leave the house, and who I can see. I know deep down, only one of us will make it out of this marriage alive.