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. 

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...

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. 

Charlotte Morgan knows how it feels to desperately want a baby. As a child, seeing her mum devastated by losing her longed-for babies, Charlotte wished another woman could give her mother what she so craved. Now Charlotte’s a mum herself and knowing how much love her daughter, Alice, brings into her life, she vows to help others achieve their dreams of becoming a parent. When she meets Malcolm and Brenda on a surrogacy website, it seems she's found the perfect couple. In their late 40s, they have wealth and an enviable life, but there’s one thing missing – a child of their own.

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.

Just four words were printed in the card. He doesn’t love you. I’ve been dreaming about this day - marrying Adam, my childhood sweetheart, who I’ve loved for 18 years. I didn’t realize the perfect day would turn into the perfect nightmare. I was so excited to send out the wedding invitations, carefully writing everyone’s names on thick cream paper in beautiful cursive script. I had no idea I was inviting someone to destroy our marriage. 

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.

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. 

The phone rings. What Eva doesn’t realize is that the call will signal the end of what she knows to be true. The end of trusting her family. And the end of everything keeping her safe. The phone call is from a hospital hundreds of miles away. A woman has been admitted with a serious head injury, saying she’s Eva’s older sister. A sister Eva never knew she had. Whose name - Nancy - has never once been mentioned by her parents. It seems impossible. Could the two people who brought Eva up have lied to her for her whole life?

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? 

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.

Orly, Lenny, Mel and Thea have been best friends since school. But now it is 20 years later and inevitably they have drifted apart. It is Lenny's 40th birthday, plus Orly and Mel need cheered up, so Thea suggests a weekend away at a festival in their hometown. It's a chance for them all to reconnect. But their holiday soon takes a sinister turn, and not all of the friends will leave the festival alive....   

It was a whirlwind romance. And when Drew, caught up in the moment, suggests that he and Poppy don’t tell each other anything about their past lives, that they live only for the here and now, for the future they are building together, Poppy jumps at the chance for a fresh start. But it doesn’t take long for Poppy to see that this is a two-way deal. Drew is hiding something from her. And Poppy suddenly has no idea who the man she has married really is, what he is hiding from her or what he might be capable of.  

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.

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.