Marin used to have it all. Married to the love of her life, she owns a chain of upscale hair salons, and Derek runs his own company. They're admired in their community and are a loving family - until their world falls apart the day their son Sebastian is taken. A year later, Marin is a shadow of herself. The FBI search has gone cold. The publicity has faded. She and her husband rarely speak. With her sanity ebbing, Marin hires a Private Investigator to pick up where the police left off. 

Eva Curtis is a pathological perfectionist whose attention to detail means she never makes mistakes – until one slip-up leads to the death of a patient and the end of her career.

One little girl. Mirabelle’s mother loves her. She’s her ‘little doll’. Mother dresses her, paints her face and plaits her hair. But as Mirabelle grows, the dresses no longer fit quite as well, the face paint no longer looks quite so pretty. And Mother isn’t happy. Two little girls. On Mirabelle’s 13th birthday, Mother arrives home with a present - a new sister, five-year-old Clarabelle, who Mother has rescued from the outside world. But Mother only needs one.

At first, Katherine dismisses her early-20s intern as a millennial ‘snowflake’: soft, entitled, moralistic. Yet as Lily’s youth and beauty increasingly remind Katherine of everything she once had, she starts to develop a dark fascination with her new colleague. But is Lily as perfect as she seems - or does she have a sinister hidden agenda? As Katherine is drawn into an obsessive power struggle with the intern, a disturbing portrait emerges of two women hiding dark secrets - and who are desperate enough to do anything to come out on top.

Pete Riley is a stay-at-home dad; his partner, Maddie, works in advertising. After Pete drops two-year-old Theo off at nursery one morning, he's politely accosted by a man who looks just like Theo. The man, Miles Lambert, breaks the devastating news that Theo is in fact not Pete's son, but his - the two babies got mixed up at hospital and Miles and his wife, Lucy, now have the Rileys' son at home. They've already carried out DNA testing to prove it.

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.

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....

Christine and Jessica cross paths working at the advertising agency Christine runs with her husband. These two women are about to uncover the dark secrets of their own traumatic pasts. But they have no idea that they are connected. The shocking truth of what happened at the wedding all those years ago, and what became of Margaret, is going to blow their lives apart in more ways than each of them could ever have imagined....

On a quiet street, one house is burning to the ground. By the time sign language interpreter Paige Northwood arrives, flames have engulfed her client’s home. Though Lukas is safe, his wife is still inside. But she was dead before the fire started. Lukas signs to Paige that he knows who killed his wife. But then he goes silent - even when the police charge him with murder. Is he guilty, or afraid? Only Paige can help him now.

Ursula is unable to face up to the tragedy that consumes her, her world has shrunk to an almost unrecognisable state. Then Alice, who’s in the first flush of her relationship with Simon who seems perfectly normal—except that he flinches at the slightest touch. And Gareth, who lives a humdrum life as he struggles to cope with his mum’s increasing dementia. She can’t remember much about her days—not even when a postcard from his long-dead father comes through the door. None of these three strangers have ever met, but their worlds will soon collide.

Ava only left her daughter in the pushchair for five minutes. The buckle was fastened, and she was sure it was safe. But when she came downstairs, the door was open and Abi was gone - she walked down the road, past the Lovegoods' house, and was never seen again. A year later, the Lovegoods throw a housewarming party, showing off the results of their renovation. Ava doesn’t want to go. She can’t bear to look down that end of the road, to see the place where Abi vanished, and she doesn’t want to spend time with people who don’t share her grief. 

What do you do when you can't run and you can't hide? Lauren's daughter, Zara, witnessed a terrible crime. But speaking up comes with a price, and when Zara's identity is revealed online, it puts a target on her back. The only choice is to disappear. To keep Zara safe, Lauren will give up everything and everyone she loves, even her husband. There will be no goodbyes. Their pasts will be rewritten. New names, new home, new lives. The rules are strict for a reason. They are being hunted. One mistake - a text, an Instagram like - could bring their old lives crashing into the new.

Esme is a start-up success who runs her own successful media company and heads up a series of investigative podcasts. She also has a beautiful home, where she lives with her sister, Michelle, and her son, Zachary. Sure, there’s an ex-husband hanging around - Owen likes to pop round a bit too often - but everything is civilised and amicable. She has life all tied up. But Esme knows that any successful podcaster is only as good as her last story, so she sets out on a new series of interviews to get to the truth behind Simone Fischer’s high-profile murder of her husband. 

On the hottest day of the year, Caroline Harvey is found dead in Suffolk. Her body is found draped over a cot - but the baby she was looking after is missing. Hundreds of miles away, Siobhan Dillon is on a luxurious family holiday in France when her husband, Callum, is arrested by French police on suspicion of murder. As Siobhan’s perfect family is torn apart by the media in the nation’s frantic search for the missing baby, she desperately tries to piece together how Callum knew Caroline.

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?