Frankie Turner knows what it's like to be unwanted; she was brought up in care. Now as a social worker to kids in the same system, she’s someone who understands ... But Frankie is hiding an unthinkable secret: one that may have its roots in the murder of a young, beautiful woman fifteen years ago.

From the outside, my life appears normal, boring even – but in that way you treasure when you once had nothing. These days, I have a loving new husband, a polite and intelligent teenage son. Everything seems perfect, but beneath the surface, I feel afraid. My son, the child I’ve sacrificed everything for, is scaring me. When he looks at me, his gaze is dark and calculating. In public he’s as sweet as always, but the things he says to me at home make my neck prickle with fear. I'm a mother – I've learned to trust my instincts, and right now, they're screaming that something is very wrong.

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?

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…

Never question a mother’s intuition. My water isn’t supposed to break while there’s a storm raging, when my husband isn’t on the island, and as the power flickers out. Darkness covers the cabin as I cling to my belly. I never imagined it happening like this. Trained as a midwife, I know I can deliver my daughter.

This is my first job as a housekeeper, but Evan Warner doesn’t need to know that. It’s the first of many lies I’ll tell him. He just lost his wife, Lola, and now he and his young daughter Jessica are adrift. But no amount of cleaning will rid this house of the secrets that have seeped into the cracks. I never forgave Lola for what she did to me. But I can’t let Evan get away with her murder.

My husband, James, and I love living on Smith Street, with its neat houses and friendly family barbecues. Our daughter, Scarlett, can play outside with the other local kids–it’s somewhere nothing bad could ever happen. Or so I thought....

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.

“Can you start right away?” I can hear the desperation in Dr. Roth’s voice. He’s longing for someone to look after his poor, sick wife Sabrina in their perfect Florida home. The job pays an awful lot. And I really need the money. As long as they don’t ask too many questions. I spend my days by Sabrina’s side. She has everything money could buy—a luxurious home, a handsome, doting husband who would do anything for her. But Sabrina rambles about the death of a child.

Mark and I pride ourselves on giving visitors to our hotel, high on the rugged Maine cliffs with views of the ocean, a vacation they won’t forget. But the Rowes are strangely overfamiliar when they arrive with their teenage daughter. The wife puts a hand on Mark’s forearm, and her husband meets my eyes with a knowing look as I hold my little son tight. They gush that they loved their previous stay here, but I’m certain I’ve never seen them before.