Three very different women come together to complete an environmental survey on the Northumberland countryside. Three women who, in some way or another, know the meaning of betrayal....For team leader Rachael Lambert the project is the perfect opportunity to rebuild her confidence after a double-betrayal by her lover and boss, Peter Kemp. Botanist Anne Preece, on the other hand, sees it as a chance to indulge in a little deception of her own. And then there is Grace Fulwell, a strange, uncommunicative young woman with plenty of her own secrets to hide.

When a woman's body is discovered in a cathedral and hours later a young man is found hanging from a tree outside his home, Detective Lottie Parker is called in to lead the investigation. Both bodies have the same distinctive tattoo clumsily inscribed on their legs. It's clear the pair are connected, but how? The trail leads Lottie to St Angela's, a former children's home, with a dark connection to her own family history. Suddenly the case just got personal.

April Clarke-Cliveden was the first person Hannah Jones met at Oxford. Vivacious, bright, occasionally vicious, and the ultimate It girl, she quickly pulled Hannah into her dazzling orbit. Together, they developed a group of devoted and inseparable friends—Will, Hugh, Ryan, and Emily—during their first term. By the end of the year, April was dead.

In the summer of 2006, Emma Price watched helplessly as her six-year-old son's red coat was fished out of the River Ouse. It was the tragic story of the year - a little boy, Aiden, wandered away from school during a terrible flood, fell into the river, and drowned. His body was never recovered. Ten years later Emma has finally rediscovered the joy in life...until Aiden returns.

On a cool June morning, Isa Wilde, a resident of the seemingly idyllic coastal village of Salten, is walking her dog along a tidal estuary. Before she can stop him, Isa's dog charges into the water to retrieve what first appears to be a wayward stick - and to her horror, Isa discovers it's not a stick at all...but a human bone. As her three best friends from childhood converge in Salten to comfort a seriously shaken-up Isa, terrifying discoveries are made, and their collective history slowly unravels.

Deborah Jenkins pulls her coat around her as she sets out on her short walk home in the pouring rain. But she never makes it home that night. And she is never seen again.

Four years later, an abandoned baby girl is found wrapped in dirty rags on a doorstep. An anonymous phone call urges the police to run a DNA test on the baby. But nobody is prepared for the results. The newborn belongs to Deborah. She’s still alive.

Fegan has been a "hard man" - an IRA killer in Northern Ireland. Now that peace has come, he is being haunted day and night by 12 ghosts: a mother and infant, a schoolboy, a butcher, an RUC constable, and seven other of his innocent victims. In order to appease them, he's going to have to kill the men who gave him orders. As he's working his way down the list, he encounters a woman who may offer him redemption; she has borne a child to an RUC officer and is an outsider too.

After a woman is brutally slain, investigators bring psychiatrist Joe O'Loughlin in for expert consultation. Joe is shocked to discover the dead woman is a former patient of his who cried rape when he rebuffed her sexual advances. Citing doctor/patient confidentiality, Joe hides this information. But the truth emerges, and suddenly he is the prime suspect.

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.

For decades the Moore Asylum was home to the forgotten children of Brooklyn Bay. But ever since a scandal forced its closure, the abandoned building has cast an imposing shadow. Until now - when an elderly man is found dead, his body strapped to an ancient gurney. Detective Lucy Harwin, still reeling from a previous case that ended in the devastating murder of a mother and her child, finds herself on the trail of a killer ruthlessly fixated on avenging the asylum's wrongs.

Blood has always been thicker than water for two Northern Irish brothers caught in the Belfast foster system, but a debt of past violence will be paid not just by them but also by those they left behind. Ciaran Devine, who made Belfast headlines seven years ago as the "schoolboy killer", is about to walk free. At the age of 12, he confessed to the brutal murder of his foster father; his testimony mitigated the sentence of his older brother, Thomas, who was also found at the crime scene, covered in blood.

In search of adventure, 29-year-old Conor Grennan traded his day job for a year-long trip around the globe, a journey that began with a three-month stint volunteering at the Little Princes Children's Home, an orphanage in war-torn Nepal. Conor was initially reluctant to volunteer, unsure whether he had the proper skill, or enough passion, to get involved in a developing country in the middle of a civil war. But he was soon overcome by the herd of rambunctious, resilient children.

"It's just to say that no one has come to pick Nathan up from school, and we were wondering if there was a problem of some kind?" As Mark Douglas photographs a pod of whales stranded in the waters off Edinburgh's Portobello Beach, he is called by his son's school: his wife, Lauren, hasn't turned up to collect their son. Calm at first, Mark collects Nathan and takes him home, but as the hours slowly crawl by he increasingly starts to worry.

It's Maya and Jamie's anniversary, and she waits with excitement for him to return home for a celebratory dinner. There's a knock at the door. It's the police. Jamie has been found hanging in a local wood. His death is ruled a suicide, but Maya doesn't believe Jamie would take his own life. Something isn't right. Someone has broken into her house. Someone is watching her. And someone has gone to great lengths to cover up what Jamie was doing before he died.

When a child’s scream pierces the night, Mira does what any good neighbor would do: She calls the police. She wants to make sure that Rosie, the little girl next door, is safe. Opening her front door to the police the next morning, Gemma's picture-perfect family is forced under scrutiny of social services. As her flawless life begins to crumble around her, Gemma must fight to defend the family she loves and protect her daughter from the terrible secret she's been keeping. When Rosie disappears without a trace, Gemma thinks she only has herself to blame....