Kate used to be good at recognising people. So good, she worked for the police, identifying criminals in crowds of thousands. But six months ago, a devastating car accident led to a brain injury. Now the woman who never forgot a face can barely recognise herself in the mirror. At least she has Rob. Young, rich, handsome and successful, Rob runs a tech company on the idyllic Cornish coast. Kate met him just after her accident, and he nursed her back to health. Until one day, she looks at Rob anew.

When Abby's doctor tells her she's two months pregnant, she doesn't believe him. She can't be - she hasn't had sex for over a year. But to her astonishment and dismay, multiple tests confirm it's true. Desperately searching for an explanation, Abby recalls New Year's Day - the terrible hangover, the hole in her memory where the night before should have been and the inexplicable sense of unease - and realises that this baby must have been conceived at her best friend Danny's NYE party.

Jarlath 'Jar' Costello's girlfriend, Rosa, committed suicide when they were both students at Cambridge. Jar is obsessed with the idea that Rosa is still alive and is tormented by disturbingly real sightings of her. When a startling discovery convinces him more than ever that these are not just hallucinations, Jar is thrust into the heart of a larger intrigue that may finally shed some light on Rosa's death.

You see the people you work with every day, but what can't you see? Amira, Sarah, Paula, Ewan and Charlie have worked together for years - they know how each other likes their coffee, whose love life is a mess, whose children keep them up at night. But their comfortable routine life is suddenly shattered when an aggressive new boss walks in.... Now there's something chilling in the air. Who secretly hates everyone? Who is tortured by their past? Who is capable of murder?

It all happens so quickly. One day you're living the dream, commuting to work by riverbus with your charismatic neighbour Kit in the seat beside you. The next, Kit hasn't turned up for the boat and his wife, Melia, has reported him missing. When you get off at your stop, the police are waiting. Another passenger saw you and Kit arguing on the boat home the night before, and the police say that you had a reason to want him dead. You protest. You and Kit are friends - ask Melia, she'll vouch for you.

Ellen was just trying to help a stranger. That was how it started: giving a few minutes respite to a flustered young mother sitting opposite her on the train. A few minutes holding her baby while the mother makes an urgent call. The weight of the child in her arms making Ellen's heart ache for what she can never have. Five minutes pass. Ten. The train pulls into a station and Ellen is stunned to see the mother hurrying away down the platform without looking back.

She bursts into my life like a storm, and nothing is the same again. One by one, I watch as my friends fall under her spell. Only I see that her smiles don’t reach her cold, furious eyes. And when I’m accused of things I didn’t do, when my home is vandalized, I know she’s behind it. But she only lets her mask slip when no one is looking, so if I say anything, I’ll look crazy. So when the baby shower comes around, I’m sitting on a velvet sofa in a posh hotel room, surrounded by balloons. But that afternoon, I finally learn the unbelievable truth. There is no baby....

Women are rarely cold-blooded killers. But when famous philanthropist Hugo Fletcher is found dead, there is no doubt in anybody's mind that the killer is a woman. And it is clear from the precision of the planning that this was no crime of passion. It was an execution. The victim was revered the world over for his charitable work with trafficked Eastern European prostitutes, and as at least one of these girls is missing, Detective Chief Inspector Tom Douglas is certain that there has to be a connection.

Louise has had to watch her husband, Andrew, start a new family in the four years since he left her. The ‘other woman’ is now his wife - but Louise isn’t ready to let Caz enjoy the life that was once hers or to let go of the man she still loves. As Louise starts to dig into Caz’s past, the two women’s pretence of civility starts to slip. But in trying to undermine each other, they discover more about the man they both married. And when Andrew is murdered at a family party, both women are found standing over the body. It’s always the wife. But which one?

The perfect husband...After a difficult pregnancy, Esther is grateful that her forward-thinking husband, Robin, offers to put his career on hold so that she can return to the job she loves. The perfect father...Robin flourishes in his new role of stay-at-home parent, but Esther finds leaving her daughter behind to go to work more challenging than she'd thought, and soon the imbalance in their relationship brings old tensions to the surface. A perfect lie? Then one day Esther arrives home from work to find Robin and Riley are missing. 

One sunny August afternoon, the residents of Cedar Close throw their annual summer barbecue. Children play in the cherry-tree lined street, tables are laden with food, and the wine is flowing. For Laurie Mills, it’s her first time meeting the neighbours. And it’s the first time she discovers her husband, Robert, is having an affair. Cedar Close has always been a nice place to live - a quiet suburban street where everyone looks out for one another and bad things don’t happen. Until late one evening, when Robert Mills is found dead in his bedroom.

Fran finds her standing by the swings. A little girl, Esther, no older than seven years old, by herself in the dead of night, her pretty but old-fashioned yellow dress covered in grass stains and her hair dishevelled. She says she's waiting for Father, and that strikes Fran as particularly odd. After Esther is reunited with her family, Fran can't stop thinking about this pious child whose imaginary friend is God. Fran's instincts tell her something is very wrong. Why does Esther keep running away from home, and how did she get that bruise on her leg? 

Zoe didn't meet her daughter the way most mothers do. She finds five-year-old Maddie alone and dirty on a countryside road. Frightened for Maddie's safety, she picks her up and takes her back to her father, not knowing what she's about to step into. Because Maddie wasn't just lost; she was there to lure her serial killer dad's new victim. After escaping from the clutches of Maddie's dangerous father, she bonds with the little girl. Only Maddie knows what it was like to be at that house. And when no family members come forward to claim Maddie, Zoe decides to adopt her. 

Elodie Fray wants to be more like her perfect sister, Ada, the one her parents are actually proud of. When she decided to quit her job and pursue her dream of becoming an author, she thought it would be her time to shine, but a year on nothing has happened. And she's getting desperate. When Elodie makes one small mistake on a drunken night with a friend, things quickly spiral and suddenly everyone believes she has a book deal. Unable to find a way back from her little lie, her perfect dream becomes a perfect nightmare - and desperate times call for desperate measures.

What was my sister doing standing over Florence’s cot in the middle of the night?I trust my sister, Carrie, with my daughter’s life. But then she’s accused of a terrible crime. Carrie lives under our roof, she pushes my daughter on the swings, she takes her out for ice cream. You might ask, why do I let her? Why would I risk my darling baby? How could I let my sister stay? Because I have a dangerous secret too. One that only Carrie knows about. And if that secret gets out, I could lose my little girl....