Agatha is pregnant and works part time stocking shelves at a grocery store in a ritzy London suburb, counting down the days until her baby is due. As the hours of her shifts creep by in increasing discomfort, the one thing she looks forward to at work is catching a glimpse of Meghan, the effortlessly chic customer whose elegant lifestyle dazzles her. Meghan has it all: two perfect children, a handsome husband, a happy marriage, and a stylish group of friends, and she writes perfectly droll confessional posts on her popular parenting blog.

Melville Heights is one of the nicest neighborhoods in Bristol, England. It’s the sort of place where doctors and lawyers and old-money academics live. It’s not the sort of place where people get stabbed in the back 30 times with a kitchen knife in their own homes. Someone must have seen something. Newlywed Joey Mullen, for example, recently returned from four years of working in Ibiza. She and her husband, Alfie, are eager to find a place of their own in her hometown. But Joey finds herself distracted by the man next door, Tom Fitzwilliam.

Newly married Natasha has the perfect house, a loving husband, and a beautiful little girl called Emily. She’d have it all if it wasn’t for Jen, her husband’s ex-wife who just won’t leave them alone. Then Natasha returns home one day to find her husband and Emily gone without trace. Desperate to get her daughter back, Natasha will do anything even if it means accepting an offer of help from Jen.

A teacher goes missing under suspicious circumstances and a man is murdered at a local reservoir. For Detective Robyn Carter, there's no obvious link between the cases. But as she starts to delve into them, her investigations lead her to Abigail, perfect wife and mother to beautiful little Izzy. What was Abigail's connection to the victims? And why is she receiving threatening messages from an anonymous number?

Gemma Ballantine is getting ready for work one morning when her eldest child comes running down the stairs saying the words every mother dreads. The front door is open. And her six-year-old daughter has disappeared. Frantic with fear, Gemma starts a nail-biting search for her little girl. After what feels like forever, her mother-in-law, Diane, finds Katie wandering lost a few streets away. Relieved to have her youngest child back in her arms, breathing in the sweet scent of her hair, Gemma thinks the nightmare is over. But then her perfect family starts to fall apart....

Thisbe Chisholm wants to be a writer. It’s 2007, a time of digital revolution and skyrocketing property prices, but she’s an old-fashioned girl. She longs only to tell the stories written on her heart. While her best friends, Penny and Jane, and her darling boyfriend, John, seem set for stellar careers in their chosen fields, Thisbe works nights as a hostess at a glitzy harbourside Sydney club - a job she despises but has paid the rent for the last three years since university graduation.

Then - In charge of her little sister at the beach, Claire allowed Eleanor to walk to the shop alone to buy an ice cream. Placing a coin into her hand, Claire told her to be quick, knowing how much she wanted the freedom. Eleanor never came back. Now - The time has finally come to sell the family farm and Claire is organizing a reunion of her dearest friends, the same friends who were present the day her sister went missing. When another girl disappears, long-buried secrets begin to surface.

Emily Klein doesn’t know she has killed her husband until the day of his funeral. At first, signs point to a tragic accident. Yet, as Emily pieces together the events before his death - events which led to her own memory loss - she begins to suspect that her husband’s death may have been the result of more than a terrible twist of fate.... But the accident is only the beginning. Because while Emily’s physical scars will heal, the trauma of the accident has awakened old ghosts. She hears strange sounds, catches things that can’t possibly be there in the corner of her eye.

Jess, a 29-year-old Londoner with a Kate Beckett fringe and a tendency for dramatics, gets taken on a surprise trip by her long-term boyfriend, Pete, to attend her best friend’s last-minute wedding in South Africa. Jess imagines sun, sand, wine and safaris. And returning to London with an ethically mined diamond on her left hand... But this holiday isn’t set to be quite the fairy tale Jess has planned. Suddenly she finds her world tilting on its axis, and things are only set to get worse when Jess returns home....

It was their darkest secret. Three schoolgirls made a promise - to take the horrible truth of what they did to the grave. Thirty years later, Beth and Sally have tried to put the trauma behind them. Though Carol has distanced herself from her former friends, the three are adamant that the truth must never come to light, even if the memory still haunts them. But when some shocking news threatens to unearth their dark secret, Beth enlists the help of private investigator Matthew Hill to help her and Sally reconnect with estranged Carol.

Kate is a rapidly rising star of the trauma therapy world - London based, shy, uptight, and with an air of aloofness that masks a deep sense of insecurity. When she has to relocate her "Traumatology for the 21st Century" conference to Horton Hill "Deluxe" Hotel and Conference Centre in the heart of industrial West Yorkshire, she is understandably horrified by the state of the place.

Lottie Carlyle is happy enough. Living in a beautiful cottage with her two adorable - sometimes - kids in an idyllic village, on good terms with her ex-husband, and with friends all around, everything is going just fine. But when she meets her new boss, her peaceful world is thrown into delightful, exciting, and frustrating chaos. Tyler is perfect for Lottie, but her kids do not agree.

From the outside the parents of the kindergarten class at Darley Heights primary school seem to have it all. Living in the wealthy Sydney suburbs, it's a community where everyone knows each other - and secrets don't stay secret for long. The big date in the calendar is the school's annual fundraising trivia night, but when the evening gets raucously out of hand, talk turns to partner-swapping. Initially scandalised, it's not long before a group of parents make a reckless one-night-only pact. But in the harsh light of day, those involved must face the fallout of their behaviour.

Scandal has derailed Journalist Kitty Logan's career, a setback that is soon compounded by an even more devastating loss. Constance, the woman who taught Kitty everything she knew, is dying. At her mentor's bedside, Kitty asks her - what is the one story she always wanted to write? The answer lies in a single sheet of paper buried in Constance's office - a list of 100 names - with no notes or explanation. But before Kitty can talk to her friend, it is too late.

Alice: beautiful, kind, manipulative, liar. Clare: intelligent, loyal, paranoid, jealous. Clare thinks Alice is a manipulative liar who is trying to steal her life. Alice thinks Clare is jealous of her long-lost return and place in their family. One of them is telling the truth. The other is a maniac. Two sisters. One truth.