I stare at the messages between my husband Rob and another woman, their plans to run away together bringing tears to my eyes as I stand, trembling, in our luxurious apartment. I thought I had the perfect marriage. As our three beautiful children sleep soundly in the next room, I think about our family holidays, our romantic date nights, and the day Rob proposed to me. In the last few months, I haven’t complained about his late-night meetings or got jealous about his weekends away. I trusted my husband. But now I’m questioning everything.

Everyone thinks I’m living the perfect life. I have my dream job, a stunning apartment, and glamourous friends – who know nothing about my dark past. So I’m shocked when I run into Anna, who I haven’t seen in eighteen years. Everything about her reminds me of the life I’ve left behind. But as her eyes fill with tears and she tells me she’s lost her job and can’t pay her rent, I reluctantly offer her my spare room.

Last night, we celebrated our anniversary. Over candlelight, we talked about the children, our work, and I was so happy, and felt so loved. But the next morning, when I check my phone, there is a message. From a friend. And a string of photos appear of my husband, Will, with another woman: walking along the street holding hands. Going into fancy hotels. Standing at a window, his arms around her, her head on his shoulder…

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 could tell when my son started hiding things from me. He used to walk to school with a mischievous grin on his beautiful face. Now he avoids eye contact and keeps his head down. Since I discovered he’s being bullied by a classmate, I’ve spent every day worrying, my stomach churning with anxiety from the moment he leaves the house to the second he walks back through the door. Everyone keeps telling me I’m overreacting, but I won’t risk my child’s safety. My husband and I try to talk to the other boy’s parents, but it only makes things worse. Then our precious child is hurt. Enough is enough.

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.

I’ve been on edge the whole time because 15 years ago when we were living in this city my husband Jack did something that ripped our lives apart. I swore I would never come back here, but Jack insisted. One afternoon, in the blur of a crowd, I lose sight of my son. I can’t find him anywhere. Frantic, I call my husband. But what he tells me next shakes me to the core....

When Mel arrives at the holiday cottage in the Lake District, she expects to find the heating on and her husband Luke and the two children waiting for her. Maybe a bottle of wine open… Instead, there is just a note on the side, saying they’ve gone out for a walk. But they aren’t back several hours later, and Mel knows something is wrong. Really wrong. When a search doesn’t find them, she has to confess to the police that her marriage isn’t all that it seems.

As he packs my things, the nurses tell me Freddie hasn’t left my bedside since the accident I was in days ago. They tell me I’m lucky. We seem like the perfect couple, and together we’ll figure out what happened. So I go home to a beautiful house with a fancy marble kitchen and manicured garden that is supposedly ours. But deep down I know something isn’t right. Even though my memories are gone, this doesn’t feel like my life.

Jay and I have only known each other a short while, but whenever I gaze into his gorgeous brown eyes I know he’s the one. His little house by the deep forest’s edge is perfect for the two of us—no internet, no phone signal, and no neighbors. I’m about as far from my past as I could be. Warm in Jay’s arms, I can persuade myself it’s ok that he disappears for hours when he thinks I’m asleep at night, returning the next morning, glittery eyed and tense. I won’t question him, I can’t challenge him. I need our relationship to work. Because I have secrets too.

It’s the day I’ve been dreaming about my whole life. As I glide down the flower-strewn aisle overlooking the Greek orange groves, in my pearl-encrusted ivory gown, I finally see my fiancé Nik. We look like the perfect couple, but not all fairy tales have happy endings....

Fran made the biggest mistake of her life when she had an affair with Ben. Both their families live in the small, tight-knit town of Oakheart, and their daughters are the best of friends. The relationship is over, but her guilt haunts her every waking moment. She tries to push it down, but it's always there, simmering just beneath the surface. Fran has managed to keep the truth hidden from her husband… so far. But the cracks in their marriage are starting to show.

When I reach my husband, we kiss against the perfect backdrop of the shimmering turquoise sea. The congregation claps, and I turn to smile at them. Then my smile freezes. I see him. Sitting there among my loved ones. An uninvited guest who knows the truth about me and the terrible thing that happened 10 years ago. The man who won’t ever let me be happy. And as he steps forward, asking for everyone’s attention, my legs buckle. I know he wants to destroy my perfect new life.

Our new home was meant to be a chance for us to start again; to make new friends and forget the past. And as I look around the barbeque we’ve thrown for our neighbors, I dare to dream that things will be all right. I watch my husband joking as he flips burgers and my daughter turning cartwheels on our sun-bleached lawn. And then my gaze falls on my son, Jacob, and his new girlfriend, Rose, in her light blue jeans and her green crop top. There is a worried expression clouding her beautiful eyes.... The next day I get a call from Rose’s mother that chills me to the bone.

The day after her ninth birthday, Lucie and Blake Sullivan agree, for the very first time, to let their daughter, Grace, make the four-minute walk back home alone from a friend’s house down the street. They joke with friends about hiding behind bushes to ensure she is safe. But the joke turns sour when Grace does not appear. Despite the best efforts of the police and local community, Grace seems to have vanished into thin air. With hope fading fast, Lucie knows she can rely on her husband to support her. That is until the day she makes a shocking discovery....