Naomi always wanted to be a mother. But three years ago, her husband left, taking their child with him. Now, her daughter has come to stay, and Naomi knows it's her one chance to re-build her family. But the night ends in a terrible accident. And Naomi has no memory of what happened. Panicking, desperate, Naomi finds herself telling a lie...

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.

Erin lives an idyllic life by the seaside with her baby boy and handsome Australian fiancé. She's upbeat and happy - a natural mum. At least that's what her thousands of followers on Instagram think. In the real world, Erin is struggling with anxiety and finding it difficult to connect with her screaming son. So when a famous agent offers to make her the biggest instamum out there, she's over the moon. 

Tucking her little boy Ollie into bed one night, Sarah notices his beloved teddy bear, which she bought him when he was born, is missing and in its place is a new toy given to him by her ex-husband’s new girlfriend, Laura. When she asks Ollie about it, he begins to shift uncomfortably before whispering, "Laura told me a big secret, and she said I can never tell you." Soon, Ollie is asking to spend more time with his dad and Laura, and shrinking away from Sarah. Then, when she calls to him in the garden one day, Ollie doesn’t answer back. 

Ruth is a successful television executive with a seemingly perfect life: a nice house in London, a lawyer husband and two grown-up daughters. But at 54, with an empty nest and the menopause behind her, she feels restless and dissatisfied. After multiple rounds of failed IVF, her eldest daughter Lauren has been told that the only chance for her and her husband to have their own child is surrogacy. So when Ruth discovers that, with the right dose of hormones, she could carry their baby, out of desperation they agree.

I stare at the newspaper article about a baby snatched from the back of a car 30 years ago and wonder why someone would post it through my door. Looking closer, my blood freezes. The little girl in the photo has an unusual scar - just like mine. I’ve never met anyone with one like it. Is this stolen child...me? Trembling with shock, I know I have to confront my mother. My parents got me through a horrific accident, helped me find a job I love teaching art, and even with buying my own house. But was it all built on lies? 

I made a new friend at playgroup today. She’s different from the other mothers. She feels like someone I can trust. Someone I can confide in. But there are some things I can’t tell her. Things I can’t tell anyone. Because I have a secret that no one else knows. One that still haunts my dreams, wakes me up in cold sweat at night. Even another mother would never understand. Unless, of course, she’s hiding something, too.

It hits her: the same strange smell that’s been following her for weeks, and the shadow of an image slides into her mind, but is gone just as quickly. Gripped by an ice-cold fear, in that one terrible moment, she realises: it’s not a dream she’s remembering. It’s something that actually happened. 

Carly had thought they’d always live there. The beautiful Cornish cliffside house they’d taken on as a wreck, that Mark had obsessively redesigned and renovated - a project that had made him famous. It was where they’d raised their children, where they’d sat cozily on the sofa, watching storms raging over the sea below. It was where they’d promised to keep each other’s secrets. Until now. Because Mark has fallen in love. With someone he definitely shouldn’t have. Someone who isn’t Carly. And suddenly their family home doesn’t feel like so much of a safe haven. 

Glamorous, beautiful Mummy has everything a woman could want...except for a little daughter of her very own. So when she sees Kim - heavily pregnant, glued to her phone and ignoring her eldest child in a busy shop - she does what anyone would do. She takes her. But little foul-mouthed Tonya is not the daughter that Mummy was hoping for: disobedient, uncooperative and always asking about the funny smell coming from the cellar. Meanwhile Kim is demonised by the media as a 'scummy mummy', who deserved to lose Tonya and ought to have her other children taken too.

Emma and Dele’s dreams came true nine years ago when they adopted their daughter, Isla. It felt like fate, like they were meant to find each other, and now they’re living the life they always wanted. But then one day a new family moves into Forest Grove - and Emma can’t shake the chilling feeling that the wife looks just like Isla’s birth mother. Emma tells herself that this sophisticated stranger can’t possibly be the troubled woman she remembers from the adoption. But as they get to know each other, it becomes clear that Tatjana has a special interest in Isla.

I wrap my arms around the tree trunk, pressing my cheek against it until the bark digs in and the missing poster is finally secured. I try not to look at the photograph on it. At the features so similar to mine. Perhaps this will be the year someone comes forward. Were crucial mistakes made by detectives from the very beginning? Could the pressure of living two lives have led my sister to run away - or even end it? Or did someone in her tight circle of friends and family have reason to want her gone? Someone out there must know something. 

Julia Blythe is starting again. After blowing the whistle on a fellow surgeon at her hospital, resulting in him being let go, she found herself illegally bullied from the job by her male colleagues who closed ranks against her. No longer willing to endure their campaign of smears and intimidation, she packs her family up and moves to Devon, to start a new life in a new hospital. To Nathan Sloan, who abuses his role as a surgeon as fully and freely as he can, she couldn’t be more perfect.

Clare and Lorraine have been friends since college and trust each other with their lives. So when Lorraine, a single mother, needs a much-needed night away without her children, she calls on Clare and her husband, Sam, to look after them. They're godparents - what could go wrong? While Clare and Sam believe the children to be asleep, the unimaginable happens and Clare finds baby Theo lifeless in his room. The police are called. Statements are taken. But the biggest nightmare for any parent is about to spiral out of control. Because a lie has been told. An enormous and terrible one. 

I’d heard of the Baby Caroline case, of course. When a baby is snatched from her mother’s arms, the whole country knows about it. I knew about the parents left lying by the swimming pool, the open window in the nursery. But I never dreamed it had anything to do with me. Today, my beautiful daughter turned one. We were unwrapping gifts and blowing out candles when the knock came at the door, and they took my mother away. The police say she’s not really my mother. That she stole me, 30 years ago.