Christopher and Hannah are a happily married surgeon and nurse with picture-perfect lives. All that’s missing is a child. When Janie, an abandoned six-year-old, turns up at their hospital, Christopher forms an instant connection with her, and he convinces Hannah they should take her home as their own.

Best friends Lindsey, Kendra, and Dani endure every parent’s nightmare when a tragic accident befalls their teenage boys, leaving one dead, another in a coma, and a third too traumatized to speak. Reeling from the worst night of their lives, the three mothers plunge into a desperate investigation of the bizarre incident. How could something so horrible happen in their wealthy Southern California suburb? They soon discover that the accident was just the beginning, and troubling discoveries lead to chilling questions: Do they really know their children? Do they even know each other?

Meet Noah - an A-honor-roll student, award-winning swimmer, and small-town star destined for greatness. There weren't any signs that something was wrong until the day he confesses to molesting little girls during swim-team practice. He's sentenced to 18 months in a juvenile sexual-rehabilitation center. His mother, Adrianne, refuses to turn her back on him despite his horrific crimes, but her husband won't allow Noah back into their home.

Growing up abandoned by her father and raised by a single mother, Celeste was determined to create the perfect family - but even perfect families have secrets. Her days are filled with a rewarding career, a devoted husband, and her four-year-old daughter. Celeste is the only one who knows the precarious house of cards her family is built upon - until the day her daughter falls critically ill. Then her world quickly spirals out of control, her secret threatening to destroy her marriage, family, reputation, and sanity.

Emily and Elizabeth spent their childhood locked in a bedroom and terrorized by a mother who drank too much and disappeared for days. The identical twins were rescued by a family determined to be their saviors. But there are some horrors love can’t erase.... 

Adam and Sophie Warner and their three-year-old daughter are vacationing in Washington State’s Hood Canal for Memorial Day weekend. It’s the perfect getaway to unplug - and to calm an uneasy marriage. But on Adam’s first day out on the water, he sees Sophie abducted by a stranger. A hundred yards from shore, Adam can’t save her. And Sophie disappears.

Suzi did a bad thing. She’s paying for it now, pregnant, scared, and living in an isolated cottage with her jealous husband, Nick. When Nora moves into the only house nearby, Suzi is delighted to have a friend. So much so that she’s almost tempted to tell Nora her terrible secret. But there’s more to Nora than meets the eye. It’s impossible - does she already know what Suzi did?

When I arrive unannounced at my husband's studio in need of a shoulder to cry on after hearing that my best student, Alex, has died, I see a pair of wineglasses drying by the sink, and my deepest fear is confirmed: my husband is having an affair. Most women would fall to their knees in tears and throw him out of the house - but I just can't bring myself to do it. Instead, I go home and cook a healthy dinner for our children, walk the dog, and unload the dishwasher without complaint. I need this marriage to work to protect a terrible secret of my own....

Roz is young, penniless and pregnant. All she wants is to be the perfect mother to her child, but the more she thinks about her own chaotic upbringing, the more certain she is that the best life for her baby is as far away as possible from her hometown in Ireland. Determined to do the right thing, Roz joins an elite adoption service and can’t believe her luck. Within days she is jetting to New York to meet a celebrity power couple desperate for a child of their own.

It was supposed to be the perfect reunion: six university friends together again after twenty years. Host Ali finally has the life she always wanted, a career she can be proud of and a wonderful family with her college boyfriend, now husband. But that night her best friend makes an accusation so shocking that nothing will ever be the same again.

Two-and-a-half-year-old Holly is playing happily in a pink, plastic playhouse, while her mother Rachel sips coffee and chats with a friend nearby. It should be an ordinary day for all of them. But, in the blink of an eye, it turns into every family’s worst nightmare. Holly is taken by a stranger and never found. Nine years later, Rachel is living a quiet life in Dorset. She’s tried to keep things together since the traumatic day when she lost her eldest daughter.

The first time you see them, out for an evening walk on the cliffs, you’ll think they’re the perfect family. You’ll see a wife who looks so happy, strolling peacefully beside her husband in his dark winter coat, holding her daughter’s hand. But you have no idea what’s really happening in their house.... If you come a little closer, you might hear the way the man speaks to his wife. You might notice that the woman doesn’t have any close friends. That sometimes her husband doesn’t want her to leave the house.

Since Alice’s fiancé walked out on her, she never thought she’d meet "The One". But all that changes when she meets Dominic. Handsome, charming, and kind, Alice can’t believe her luck when he proposes a few months later and moves into her West London home. Three years on, Alice’s catering business is thriving and she is married to a man she adores. So when she sees that little blue line, it should be the happiest moment of her life: they’re going to have a baby. But then the police knock on her door and Alice’s whole world is turned upside down...Dominic is dead.

Gemma Robinson comes into Elliot’s life like a whirlwind, and they marry and settle into his home. When she asks him if her parents can come to stay for a couple of weeks, he is keen to oblige - he just doesn’t quite know what he’s signing up for. The Robinsons arrive with Gemma’s sister, Chloe, a mysterious young woman who refuses to speak or leave her room.

Kat remembers the days when her only daughter Amy wouldn't leave her side. But now Amy is grown up and gone - to university in a town several hours away. Kat's house - which once felt too full, too noisy, too busy - is deathly quiet, and Kat awaits the daily phone call to tell her that her beloved daughter is thriving and happy. But one day Amy doesn’t call. Kat’s husband and friends think she is being paranoid. But Kat knows right away that something is very wrong.