You leave for work one morning. Another day in your normal life. Until you come home to discover that your boyfriend has gone. His belongings have disappeared. He hasn't been at work for weeks. It's as if he never existed. But that's not possible, is it? And if he has gone without a trace, why do you still feel that someone is watching you?

Coworkers Ruby and Harry are in love - but they’re married to other people. They decide to tell their spouses that their marriages are over and to start a new life together. Ruby has wanted to leave her controlling husband for a while, so she tells him she’s leaving and waits at the hotel where she and Harry are to meet. But Harry never shows up. Suddenly, Ruby has lost everything.

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. 

Everyone has secrets, and Rachel Holloway is no exception. She’s worked hard to keep the past where it belongs: dead and buried. And so far, she’s been very successful. But now the small newspaper where she works wants to produce a podcast on a cold case: the disappearance 12 years ago of young Molly Forster. Some secrets should never see the light of day, and, as far as Rachel is concerned, whatever happened to little Molly is one of them. 

Helen Cooper has a charmed life. She's beautiful, accomplished, organised - the star parent at the school. Until she disappears. But Helen wasn't abducted or murdered. She's chosen to walk away, abandoning her family, her husband, Sam, and her home. Where has Helen gone, and why? What has driven her from her seemingly perfect life? What is she looking for? Sam is tormented by these questions and gradually begins to lose his grip on work and his family life.

When Freya first met Phil, she thought he was the man of her dreams. He bought her roses every week, booked surprise trips to sun-soaked destinations, and showed her affection like she’d never experienced before. But over time the dream had become a violent nightmare. And now Freya is packing her bags, knowing it’s time she escaped their increasingly broken marriage. But then Freya gets a visit from the police. Phil’s been in a horrific car crash and - as he comes around - it becomes clear that he remembers nothing since their blissful honeymoon two years before.

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?

You're not who you say you are. Neither is she. She thinks she knows me. She believes my marriage is falling apart at the seams, that my husband can barely look me in the eyes. She thinks I’m desperate for a baby, that my longing for a family keeps me up at night. As much as I hate to admit it, all of this is true. She thinks I listen to her advice, that I care about her opinion. That couldn’t be further from the truth. Because she has no idea who I am. She has no clue that I know everything. I know her secret. I know that she did the unforgivable. I know how many lives she ruined.

When I arrive unannounced at my husband's studio in need of a shoulder to cry on after hearing that my best student, Alex, has died, I see a pair of wineglasses drying by the sink, and my deepest fear is confirmed: my husband is having an affair. Most women would fall to their knees in tears and throw him out of the house - but I just can't bring myself to do it. Instead, I go home and cook a healthy dinner for our children, walk the dog, and unload the dishwasher without complaint. I need this marriage to work to protect a terrible secret of my own....

I return home to our beautiful house on a chilly winter evening expecting to find my handsome husband Richard waiting for me by the fire. We’re still so in love, and he always takes care of me. He usually comes straight back from work. But tonight, our antique clock ticks on through the dark evening, with no sign of him. Then a knock at the door shatters my perfect life. A 12-year-old-girl, Alice from the village, has been found unconscious in the field behind our house. They say she was last seen getting into Richard’s car.

Thirty-two-year-old Jessica is newly divorced and has returned home to live with her parents whilst she puts the pieces of her life back together. But Jessica isn't the only one with problems, as her mother, Jean, has recently been diagnosed with dementia. Shortly after Jessica's arrival, one of the neighbours falls to her death, in what appears to be a terrible accident. However, Jean claims that the woman was murdered by her husband and that she witnessed the whole thing.

I couldn’t believe it when I got the call to offer me my dream job. It was right in the heart of the city with a flat provided. I jumped at the chance, and within days I had made new friends and began dating a wonderful man. For the first time in years, I feel safe. But soon strange things begin to happen in my flat: odd noises in the night, the feeling that I’m being watched. When I discover an old dress hidden behind my wardrobe and wear it to work, the atmosphere chills instantly. The dress belonged to a girl my boss would rather forget. The girl before me who vanished.

Sara made one promise to herself when she was growing up in foster care: that if she was lucky enough to have a family, she’d always do whatever it took to protect them. Looking around her home with its cozy kitchen and living room, where her energetic teenage daughters and gorgeous 4-year-old son all eat, play and live together, she knows she’d do anything to keep them safe. So when Sara’s husband Matt loses his job and every shred of his confidence with it, she knows it’s up to her to bring the family back from the brink.

Emily and Jake are the perfect couple. Or so everyone says. But Emily just read a letter that has shattered her perfect world. Now she only has one thing on her mind. Which one of her friends is sleeping with her husband?

Ever since Steph’s husband walked out after a 30-year marriage, home hasn’t felt like a safe haven. Her daughter Bea thinks she’s imagining things. But Steph knows that the noises in the night, the open windows she knows she left closed, the strange smell in the kitchen - none of it feels right.