Dr. Anya Molokova, a child psychiatrist, is called in to work at MacNeice House, an adolescent mental health treatment center. There she is told to observe and assess Alex Connolly, a keenly intelligent, sensitive ten-year-old coping with his mother's latest suicide attempt. Alex is in need of serious counseling: He has been harming himself and others, often during blackouts. At the root of his destructive behavior, Alex claims, is his imaginary "friend" Ruen, a cunning demon who urges Alex to bend to his often violent will.

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.

You lost your daughter. You will never forgive yourself. And now someone is determined to make you pay.... Seventeen years ago, something happened to Jess' daughter, Beth. The memory of it still makes her blood run cold. Jess has tried everything to make peace with that day, and the part she played in what happened. It was only a brief moment of desire...but she'll pay for it with a lifetime of guilt.

Dr Cat Lupo aches for another child despite the psychosis which marked her first pregnancy. So when Ruby Winter, a small girl in need of help, arrives in the middle of the night, it seems like fate. But as the events behind Ruby's arrival emerge - her mother's death, her connection to Cat - Cat questions whether her decision to help Ruby has put her own daughter at risk.

Six months ago, Charlotte almost lost everything. Now, she’s determined to keep her daughter, Elle, safe. So when local girls close to Elle in age and appearance begin to go missing, it’s her worst nightmare. Charlotte’s fears are confirmed when a frantic search becomes a shocking murder investigation. The girls’ bodies have been found - half-buried, and with traces of mud and wildflowers under their fingernails. As Charlotte’s obsession with keeping her daughter close pushes her marriage to the brink, local DI Madeleine Wood embarks on a gruelling search for the killer.

When Simon Serrailler was a rookie constable with the Met, he did something reckless in the course of a night's work which caused a man's death. But his act was praised by his colleagues, and he was called a hero. Years later, now a detective chief superintendent who has been badly injured in the course of duty, he receives a medal for bravery at Buckingham Palace while recollecting that fateful night of his early career, when chance disguised itself as bravery.

Rose Grahame had everything Alex D’Arcy dreams of. A handsome husband, a stunning home and a baby boy with twinkling blue eyes and a smile that would brighten the darkest of days. It’s a stark contrast to Alex’s life - her dead-end job, her borderline addiction to drink and pills, her failed engagement and her cluttered flat. But the women’s lives are about to collide - and nothing will ever be the same again.

Robin Ballantyne's life is finally coming together. After learning she was pregnant with twins and being abandoned by her irresponsible boyfriend, Adam, she's settling into life as a single mother. But one night, after putting the children to bed, she hears an argument and suddenly, a body falls past her window. Running outside, she finds the body of Paula Carmichael, a renowned activist.

The truth hurts.... Erin and Roisin were friends until a fatal accident ruined both their lives. Now Roisin has discovered a secret - one Erin has kept for over a decade - and she's determined to make Erin pay for her lies. Erin wants nothing to do with Roisin. She has a new life in London and no intention of going back home. Yet when her father is mysteriously and critically injured, Erin has no choice but to return and face Roisin - and her past.

Frieda Klein is a solitary, incisive psychotherapist who spends her sleepless nights walking along the ancient rivers that have been forced underground in modern London. She believes that the world is a messy, uncontrollable place. The abduction of five-year-old Matthew Farraday provokes a national outcry and a desperate police hunt. And when his face is splashed over the newspapers, Frieda cannot ignore the coincidence: one of her patients has been having dreams in which he has a hunger for just such a child.

Kaitlyn Best is stuck in a rut. So when she discovers she's pregnant after a one-night stand with Alex, her school crush, she throws caution to the wind and accepts his offer to make a new life together in the depths of the Lake District, far from her home...and her demons. But Alex is not what he seems. And when Kaitlyn's world begins to crumble before her eyes, she realises she barely knows the man she has agreed to spend the rest of her life with.

Everyone says Lauren Tranter is exhausted, that she needs rest. And they're right; with newborn twins, Morgan and Riley, she's never been more tired in her life. But she knows what she saw: that night, in her hospital room, a woman tried to take her babies and replace them with her own...creatures. Yet when the police arrived, they saw no one. Everyone, from her doctor to her husband, thinks she's imagining things. A month passes. And one bright summer morning, the babies disappear from Lauren's side in a park. But when they're found, something is different about them.

Margot Lewis is a teacher at an exclusive high school in the English university town of Cambridge. In her spare time, she writes an advice column, "Dear Amy", for the local newspaper. When one of Margot's students, 15-year-old Katie, disappears, the school and the town fear the worst. And then Margot gets a "Dear Amy" letter unlike any of the ones she's received before. It's a desperate plea for rescue from a girl who says she is being held captive and in terrible danger - a girl called Bethan Avery, who was abducted from the local area 20 years ago and never found.

In one terrible moment, paramedic Sophie Phillips' life is ripped apart - her police officer husband is shot on their doorstep and their ten-month-old son is abducted from his bed. Suspicion surrounds her possibly corrupt husband, but Sophie believes the attack is much more personal. Sophie enlists her husband's partner in the hunt for her son, but will the history they share prove harmful to Sophie's ability to complete her mission?

Single mother Callie has come to rely heavily on her best friend Suzy. But Callie suspects Suzy's life isn't as simple as it seems. It's time she pulled away - going back to work is just the first step towards rediscovering her old confidence. So why does she keep putting off telling Suzy about her new job? And who will care for her rather frail daughter, Rae, while she is gone?