Frances Brookman has just received the phone call every mother dreads. Her daughter Naomi has been in a life-threatening accident. As she races to the hospital, Frances catches sight of a child in another car – a girl screaming for help. It's a split-second thing and looks can be deceptive. She could follow the car, but can she live with the delay getting to her daughter? If she does nothing, can she live with herself?

Maggie has everything her sister Rose always wanted. A handsome husband and two adorable children, Emily and Elliot. But what Rose doesn’t see is that Maggie is struggling. Every day is a fog of sleep loss and mess made by two tiny children. Left alone in her distress by husband Stephen, Maggie drifts ever closer to the edge. When Maggie finally cracks, walking out one day and not returning, Rose is right there to step into the breach.

Emma and I were inseparable. Growing up, we did everything together. Until the unspeakable night that everything changed. So I ran away—from my mom, my sister, everything I knew, and Emma and I haven’t spoken since. My sister, Lily, was at the beach that night too. She hasn’t been able to utter a single word since. That was 10 years ago. Now, Mom and Lily need my help, and I realize I can’t run from the past forever. I’m ready to talk to Emma, ready to try to move on.

Fifteen-year-old Kayla is the apple of her parents’ eyes, their beautiful only daughter. They tried for so long to have her that she was even more precious when she arrived. But deep down, her mother Sherrie has always been terrified that their worst fear would come true: that Kayla would be taken from them. Then one day—just as Sherrie had dreaded—Kayla fails to return home after a sleepover. In desperation, Sherrie and her husband Richard call Kayla’s friends. They scour the streets, their search becoming more frantic. Until the police arrive and deliver the shocking news.

Last night my son, Shay, sneaked out of the house and didn’t come home. He promised not to go to the illegal party in the woods. But someone’s been attacked and Shay has gone missing. The police want to know if he saw what happened. I’m worried he could be involved. After all the trouble he’s been in lately, mixing with the wrong crowd, coming home beaten up and scared, I thought we’d put it all behind us. Trouble is, Shay resents me moving my new boyfriend into the family home. I found all sorts on his laptop, including a half-written email warning me not to trust David.

Nick Anthony has retreated to the North Carolina mountains to mourn the untimely death of his wife. Once a popular professor, Nick just wants to be left alone with his grief. But when his estranged brother and sister-in-law die in a house fire, a stunned Nick learns he has a niece, Annalise, who is missing. At the scene of the crime, the men who set the fire have realized Annalise, and the information they are looking for, got away. Feverish and exhausted, she stumbles onto her uncle's porch.

Mead House was once our childhood home. Despite my fears, I always knew we would have to return to face the demons of our past. Back to the place where it happened, to where, as carefree teenagers, we lost our elder sister in the most brutal of circumstances. As executors of our grandmother’s will, my twin brother, Ollie, and I needed to empty the house for resale. What I didn’t expect to discover was my sister’s secret journal that contained her most private thoughts and shocking dark secrets.

At a bleak boys boarding school in Cornwall in the eighties when bullying is rife, Will and his best friend Luke are involved in a horrific incident that results in Luke leaving. Twenty-five years later their paths cross again and memories of a painful childhood come flooding back to haunt them both. Will’s wife, Harmony, is struggling after a miscarriage that has hit her hard, and wishes Will would open up about what happened. But as Will withdraws further, she finds herself drawn to the charismatic stranger from her husband’s past.

As I sit in her dimly lit bedroom, surrounded by flickering candles, I feel the crushing weight of my daughter’s absence. It's been two years since Layla was murdered. The police have searched tirelessly for her killer, but they've found nothing–it's like whoever did it vanished into thin air. My once-perfect marriage is falling apart, we can hardly look at each other anymore. Our ten-year-old son Gale is struggling. He’s changed since she died. He’s more secretive and also… I can’t quite put my finger on it. They were so close, is this Gale coming to terms with her death?

Two years ago, Sarah’s husband was jailed for her murder; her body was never found. Now, her grieving mother, Claire, spends her sleepless nights running a helpline for vulnerable women. Claire takes many calls, but one caller isn’t like the rest. She isn’t calling for help – she’s calling because she claims to know what happened to Sarah. But when Claire hears the terrifying news that her daughter’s killer has escaped from prison, she realises her nightmare is far from over – and her family are in danger yet again.

I was just a little girl, fast asleep in my stroller, the day my mother was killed. I don’t remember anything about the sunny day that turned so dark. She’d be so happy for me now, 20 years later, with my dream job as a photographer, and I’m sure she’d love my new boyfriend, Gabriel. But all my happiness vanishes in a heartbeat when the man from our past walks toward me, his eyes on me for just a fraction too long.

The bright yellow walls of the maternity ward are plastered with images of perfect families. Stroking my bump, I can’t stop tears from falling down my cheeks. I know I made the best choice for my baby girl, but surrounded by happy-looking couples, I’m desperately aware I’m about to give birth all alone. But when my midwife, Jackie, introduces herself, I relax. She holds my trembling hand and reassures me with her warmth. I know she’s here to help.

Deborah Jenkins pulls her coat around her as she sets out on her short walk home in the pouring rain. But she never makes it home that night. And she is never seen again.

Four years later, an abandoned baby girl is found wrapped in dirty rags on a doorstep. An anonymous phone call urges the police to run a DNA test on the baby. But nobody is prepared for the results. The newborn belongs to Deborah. She’s still alive.

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.

I am at home with the television on when I hear the news. A woman has been found by the docks. In heavy tones, the reporter says it appears the notorious local serial killer has returned. My breath comes short in my chest. My legs tremble. I know that can’t be true, because I know who the killer was. My father. My sisters and I learned the shocking truth after his funeral. We made a pledge to say nothing: Revealing the truth would only bring more pain. We set fire to his confession, turning his secrets into ash. But now, someone is sending us a message. Someone knows we lied.