"Are you my mummy?" Tessa Markham returns home to find a child in her kitchen. He thinks she’s his mother. But Tessa doesn’t have any children. Not anymore. She doesn’t know who the little boy is or how he got there. After contacting the police, Tessa is suspected of taking the mystery child. Her whole life is turned upside down. And then her husband reveals a secret of his own. Tessa isn’t sure what to believe or who to trust. Because someone is lying. To find out who, she must confront her painful past. But is the truth more dangerous than Tessa realises?

Two-and-a-half-year-old Holly is playing happily in a pink, plastic playhouse, while her mother Rachel sips coffee and chats with a friend nearby. It should be an ordinary day for all of them. But, in the blink of an eye, it turns into every family’s worst nightmare. Holly is taken by a stranger and never found. Nine years later, Rachel is living a quiet life in Dorset. She’s tried to keep things together since the traumatic day when she lost her eldest daughter.

Seven-year-old Beatrice has gone missing. Her mother Claire’s whole world has been turned upside down in just one moment, and she can’t stop shaking. She’s desperate to find her precious daughter, but nothing about the day she disappeared makes sense.

Alice and Seth are a perfect love story: the handsome doctor and his beautiful fiancée. They’re wealthy, well liked and made for each other—the envy of all their friends. Alice can’t wait for the day of their dream wedding. But when she arrives at the altar, she doesn’t recognise the man waiting to marry her. When this stranger insists he’s Seth, her husband-to-be, the entire congregation seems to agree. Even her parents try to persuade Alice to go through with the wedding.

Gemma Ballantine is getting ready for work one morning when her eldest child comes running down the stairs saying the words every mother dreads. The front door is open. And her six-year-old daughter has disappeared. Frantic with fear, Gemma starts a nail-biting search for her little girl. After what feels like forever, her mother-in-law, Diane, finds Katie wandering lost a few streets away. Relieved to have her youngest child back in her arms, breathing in the sweet scent of her hair, Gemma thinks the nightmare is over. But then her perfect family starts to fall apart....

From the moment I meet my new mother-in-law in her beautiful country house, she makes it clear I’m not welcome. Lilian Fletcher hates me for marrying her precious boy on a golden beach far away from her. Starting our marriage living in the Fletchers’ family home is a nightmare. Then I discover Seb was married before and his first wife is dead. I wonder why the man I love didn’t tell me the truth. And I wonder what happened to her: the woman who came before me. How did she die?

When Mia James is washed up on a beautiful, sun-drenched beach, she has no idea who she is or what happened to her. She doesn’t even recognize her own face–until her boyfriend, Piers, comes forward, providing her with an identity. Piers is handsome and attentive, Mia’s home is huge and stylish, and her friends are eager to help her fill in the blanks. As Mia steps into the perfect life she was living before her accident, she should feel lucky to be alive. But she struggles to adjust, lost for words around people she is meant to know and love, grasping for clues about who she is.

Faye Townsend has planned the perfect summer trip for her family. But returning to the small seaside town her husband grew up in does not go to plan - the rain pours, and the long days become stifling. And then the unthinkable happens.... Her husband, Jake, and her six-year-old son, Dylan, go for an early morning walk along the beautiful, windswept clifftops. They don’t come back.

Lizzy Beresford is at home alone when she finds a chilling letter in her kitchen. Someone has been into her home - someone who wishes Lizzy harm. In her little country cottage, with her doting boyfriend, not far from the close-knit village, Lizzy can’t imagine who might want to hurt her. But when the threatening letters keep coming, she starts to suspect everyone around her. Desperate, Lizzy reaches out to her sister, Emma. They haven’t spoken in years, not since the argument that tore them apart. But Emma says: ‘I’ve been receiving letters too....’

When Anna Blackwell opens an email from an unknown sender, the shocking image attached shatters her perfect world. A woman has been killed. And Anna knows who did it. The past is catching up with her. Is it her turn next? To protect herself and her husband, Will, she must tell him the terrible truth about her first love. But as the secrets of her life unravel, Anna begins to realize that she is not the only one who has been living a lie.

Our new home was supposed to be a chance to leave our past behind. But was moving here the worst mistake of our lives? All our friends and family were gathered, glasses raised to toast our fresh start. It should have been a night for happiness and celebration. Zac and I had worked so hard for this: our first home together, just minutes from the sea. But the dream quickly turned into a nightmare.

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?

Samantha Frayn doesn’t know why Peter Bridges picks her - a nobody with bitten fingernails and a troubled childhood behind her - but she falls quickly. He’s older, charming, likes fine wine and French films, and his beautiful home has real art on its walls. Peter transforms Samantha’s life in an instant. He sees the better version of herself - the one she’s always wanted to be. It’s only normal that there’s a little friction, when she moves in, over domestic matters like where things are kept, or the proper times to eat, sleep, and shower.

Tia never harmed anyone. So why does someone want to destroy her? Tia is walking home with her children, along the lakeside of their quiet, safe town, when she realizes something is wrong with her five-year-old daughter, Rosie. She seems troubled, not at all her usual happy self. But when Tia finally coaxes Rosie to open up, she wishes she hadn’t. Because her sweet daughter asks a question Tia never thought she’d hear. "Mummy, why did you kill someone?"

Then: Morning light shines into the nursery, casting shadows across the pale pink walls and wooden cot in the middle of the room. She opens the door expecting to hear the soft coo of her daughter, Sofia, stretching herself awake. But the room is silent. The cot is empty. Her little girl has vanished. Now: Twelve years have passed, but Emily will never forget the night her life changed forever, and she’s happy to have her daughter back beside her. A teenager now, Sofia started asking questions about when she was a baby.