When Mel hears from a long-lost friend in need of help, she doesn’t hesitate to invite her to stay. Mel and Abi were best friends back in the day, sharing the highs and lows of student life until Mel’s unplanned pregnancy made her drop out of her studies. Now, 17 years later, Mel and Abi’s lives couldn’t be more different. Mel is happily married, having raised her son on her own before meeting her husband, Ben. Now they share gorgeous girls and have a chaotic but happy family home, with three children.

Anna and Zoe are twins. Identical in appearance, utterly different in personality, they share a bond so close that nothing - or no one - can rip them apart. Until Anna meets charismatic Nick. Anna is trusting, romantic and hopeful; she thinks Nick is perfect. Zoe is daring, dangerous and extreme; she thinks Nick is a liar. Zoe has seen Anna betrayed by men before. She'll stop at nothing to discover if Nick is as good as he seems. The problem is, lies may hurt. But honesty can kill.

Alison is lucky, and she knows it. She has the life she always craved, including a happy home with Jeff and their brilliant, vivacious teenage daughter, Katherine - the absolute centre of Alison's world. Then a knock at the door ends life as they know it. Fifteen years ago someone else took Alison's baby from the hospital. And now Alison is facing the unthinkable. Her daughter belongs to someone else. What would you do if you discovered your beloved child is not yours?

How far would you go for you best friend? For thirty years, best friends Stephanie and Philippa have been practically inseparable. There's nothing they would not do for one another. Until a few simple words change everything. 'I need you to say that I was with you.' Both women have always believed that friendship is built on mutual selflessness, compromise and trust. Are those beliefs now to be tested beyond endurance?

Rachel, a young woman in serious debt, needs to find a job fast before she’s made homeless. She gets a lucky break when she is offered a great position in a successful company. Then she discovers that the building was once a Victorian sweatshop with a tragic history. Is this why Rachel feels something increasingly sinister? Soon her new job becomes a living nightmare. Rachel desperately wants out, but she has no other way of escaping her debts. She’s trapped. Then she makes a shocking discovery.

When Grace’s fiancé vanishes without a trace the night after proposing, her life is turned upside down. But has Nick walked out on her, or is he in danger? As Grace desperately searches for answers, it soon becomes clear that Nick wasn’t the uncomplicated man she thought she knew. And when she uncovers a hidden tragedy from his childhood, she realises an awful truth: that you can run from your past - but your secrets will always catch up with you....

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.

What are the odds that the stranger sitting next to you on a plane is destined to change your life? Especially when they appear to be your opposite in every way. She's a life-long optimist, he's a resolute cynic. In the time it takes to fly from London to Chicago, each finds something in the other that they didn't even realise they needed. When they get off the plane their true journey begins...

Some doors should not be opened. Some can never be closed. Jo Palmer’s peaceful and happy life is about to end. Ash - the man she loves - will be arrested by the police. Millie - her precious daughter - will be taken from her. She will lose her friends. She will doubt her sanity. Someone is stealing everything Jo loves, and will stop at nothing. But right now, Jo is laughing in her kitchen, eating dinner with her family, suspecting nothing. It’s raining outside. There’s a knock at the door. They are here. 

Finally, Georgia has found the one. Luke is kind, handsome, and makes her feel safe - which is what she needs after everything she's been through. The only problem is his ex-girlfriend. Luke says Cadence just can't accept the breakup, and that explains the texts, the emails, the notes.... But then things start to go very wrong - will Cadence really do whatever it takes to get what she wants?

Jules and Holly have been best friends since university. They tell each other everything, trading revelations and confessions and sharing both the big moments and the small details of their lives: Holly is the only person who knows about Jules’ affair; Jules was there for Holly when her husband died. And their two children - just three years apart - have grown up together. So when Jules’ daughter, Saffie, makes a rape allegation against Holly’s son, Saul, neither woman is prepared for the devastating impact this will have on their friendship or their families.

Alison has it all. A doting husband, adorable daughter, and a career on the rise - she's just been given her first murder case to defend. But all is never as it seems. Just one more night. Then I'll end it. Alison drinks too much. She's neglecting her family. And she's having an affair with a colleague whose taste for pushing boundaries may be more than she can handle.

Since Alice’s fiancé walked out on her, she never thought she’d meet "The One". But all that changes when she meets Dominic. Handsome, charming, and kind, Alice can’t believe her luck when he proposes a few months later and moves into her West London home. Three years on, Alice’s catering business is thriving and she is married to a man she adores. So when she sees that little blue line, it should be the happiest moment of her life: they’re going to have a baby. But then the police knock on her door and Alice’s whole world is turned upside down...Dominic is dead.

There’s a moment, when you meet someone new, when the connection is so strong that making a friend can feel like falling in love. That’s how it was for Connie and Ness. They met in the park while their children played, and as they talked, they realised they were neighbours. Perhaps it was only natural that they and their families would become entirely inseparable. But when Ness’ marriage ends in a bitter divorce, she is suddenly at Connie’s house all the time. Connie doesn’t have a moment to herself, no time alone with her husband, not a second to chat to her kids.

When Emily and Ben move in next door to Dr Burman and his wife, Anita, they are keen to get to know their new neighbours. Outgoing and sociable, Emily tries to befriend the doctor’s wife, but Anita is strangely subdued, barely leaving the house, and terrified of answering the phone. When Emily goes missing a few weeks later, Ben is plunged into a panic. His wife has left him a note, but can she really have abandoned him for another man? Or has Emily’s curiosity about the couple next door led her straight into danger?