I tell myself that Max couldn’t kill anyone. He’s a family man now, different to who he was before. Even so, I should go to the police right away. But I can’t. Because if I do, I’m scared they’ll start to suspect me. How much do I really know about the girl in room 12? And if the truth comes out, how far will I go to protect my precious family?

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.

When six-year-old Olivia Adams disappeared from her back garden, the small community of Stoneridge was thrown into turmoil. How could a child vanish in the middle of a cozy English village? Thirteen years on and Olivia is back. Her mother is convinced it's her but not everyone is sure. If this is the missing girl, then where has she been - and what happened to her on that sunny afternoon? If she's an imposter, then who would be bold enough to try to fool a child's own mother - and why?

When I first walked into Jake and Megan’s immaculate home, I felt totally at ease. Sitting in the crisp white living room, they held hands and talked lovingly about their baby girl, Fern. As the weeks passed, I began to think I’d made a mistake in taking the job. Jake was overly friendly from the start, watching my every move and always offering to drop me home, even though it was out of his way. And Megan seemed to take pleasure in telling me off in front of her husband, blaming me for things I hadn’t done.

Leah and her three best friends get changed into their pyjamas, eat pizza, and argue about what film to watch. They laugh together, until the early hours. But the next morning, Leah blinks open her eyes and sees three empty sleeping bags. The other girls are gone. Twenty years later. In her small hometown, still-haunted Leah has never been able to shake off the rumours and whispers. How could she have slept through it all? She must know what happened.

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?

Paige, Richard and me. We thought we’d be friends forever. But everything changed the day we took the shortcut home from school along the old railway line. I wish we’d gone the long way. I wish we hadn’t seen our classmate, pale and still in the undergrowth. And I wish we hadn’t promised to keep one, awful detail a secret just between us....

Since Katie’s dad left, it’s just been the two of us, but we’re a team – singing in the kitchen at cheesy pop songs, tackling her homework. My teenage daughter is everything to me. But one night, as we’re curled up in front of the TV, the messages start. I keep my phone away from Katie so she can’t see the terrifying words: I know what you did. Now you’re going to do something for me....

Volunteering at the local nursing home is Millie Westlake’s one escape from the rumours that swirl around Whitecliff about her past. But speaking with elderly resident, Ingrid, as they play board games, Millie gets chills at her strange story about a young girl being pushed from a roof, somewhere across the valley....

Alicia’s been telling lies. And now, they’ve come back to haunt her. When an old colleague turns up at a party, Alicia comes face to face with the man who has the potential to ruin her perfect family life. He wouldn’t, would he? In order to keep her secrets, Alicia has to tell yet more lies, and when a devastating car accident makes the situation even more dangerous, it’s only a matter of time before everything falls apart. Can secrets really stay hidden forever?

Staring at the stunning diamond solitaire on her finger, Kaitlin is finally getting the chance to introduce her best friend, Zoe, to her perfect fiancé. She hasn’t known Greg long, but he looks after her, and he loves playing dad to her young daughter. How could she say no when he’s already planned their elopement? As guests arrive, why is Greg acting so shifty? And is that a flicker of recognition on Zoe’s face? And why does she look terrified every time her phone rings?

When I pick my beloved daughter Poppy up from school one afternoon, my mind races when I see the little girl holding Poppy’s hand. With the same heart-shaped face, long brown hair, and dark eyes, the two girls look identical. In fact, they look like sisters. Is the secret I’ve been holding on to for so long about to be revealed? 

Erika Cass has a perfect family and a perfect life. Until the evening when two detectives show up at her front door. A high school girl has vanished from Erika's quiet suburban neighborhood. The police suspect the worst - murder. And Erika's teenage son, Liam, was the last person to see the girl alive. Erika has always sensed something dark and disturbed in her seemingly perfect older child. She wants to believe he's innocent, but as the evidence mounts, she can't deny the truth - Liam may have done the unthinkable.

I pinch the screen to zoom until I’m staring at the face of a ghost. A man with very short hair, staring directly at the camera with piercing brown eyes. He is as he was when I last saw him: wrinkles around the corners of the eyes and a knowing smirk. That’s the expression I see when I can’t sleep. My body tenses. It can’t be him. It’s not my ex-husband. It’s not David. I know that better than anyone because he didn’t walk out on me. He didn’t disappear two years ago and he’s not a missing person. I know that for a fact because I’m the one who killed him.

Today we move into our new houses, right next door to each other. My ex-husband and me. He’s with someone else. So am I. We’re still the best of friends. We’re making sure we’re not like every other separating couple. We know we will make it work. We’ve even knocked down the fences between the houses, so the children can all run between both homes. But it seems not everyone likes this big, blended stepfamily. I try to ignore the scary note in the "new home" card and the red pen scrawled through my divorce paperwork.