When a 15-year-old girl fails to make it home after school, DI Heather Filson believes she’s dealing with just another teenage runaway. The girl’s grandfather, a notorious Glasgow gangster, disagrees. Convinced one of his underworld enemies has grabbed her, he’s prepared to bathe the city in blood in order to bring his princess home.

Met cop DI Rob Marshall is hot on the trail of the serial killer known as the Chameleon, who has abducted, tortured and killed a series of young women in Northwest London. As they close in, the Chameleon—who switches identity to get close to his victims—shoots Marshall’s partner and escapes.

On Christmas Eve, DCI Mackenzie Jones is called to a shooting at a remote farmhouse. Ralph Mallender believes his father lies dead inside. When three more bodies are discovered, it's clear a festive family gathering has turned into a gruesome tragedy. At first it seems like an open and shut case: a murder suicide committed by Ralph's volatile brother Cameron. Then new evidence makes Mack suspect the man who reported the crime is in fact the perpetrator. But Mack isn't the only one with a stake in the case.

When philanthropist Hugo Fletcher’s dead body is discovered tied to a bed in his London home, Chief Inspector Tom Douglas determines right away that he’s hunting a female killer. Though Fletcher made countless enemies through his work with Eastern European prostitutes, the crime scene reeks of sex and revenge. This murder was personal. Douglas knows Fletcher’s unhappy wife, Laura, should be his prime suspect. She’s definitely hiding something. Something big. But he isn’t convinced it’s murder. Besides, she’s not the only woman with a motive to kill the manipulative billionaire....

On a remote Highland mountain, the body of Elaine Buxton is burning. All that will be left to identify the respected lawyer are her teeth and a fragment of clothing. In the concealed back room of a house in Edinburgh, the real Elaine Buxton screams into the darkness…. Detective Inspector Luc Callanach has barely set foot in his new office when Elaine’s missing persons case is escalated to a murder investigation. Having left behind a promising career at Interpol, he’s eager to prove himself to his new team.

Married couple Mark and Cecilia seem to have it all—looks, wealth, love. But behind closed doors, things are very different—they live in silent resentment, their marriage broken by the shattering loss of the child they so desperately wanted. Enter Alice: Mark’s idea of the perfect woman. She appears from nowhere and offers Mark the chance of a new life filled with love, passion, and, finally, the joys of parenthood—everything he’s ever dreamed of. But there’s a catch.

Ruth loves her life in London—she has a high-powered career and a handsome and successful fiancé. This Christmas, she’s bringing him back to her home town to meet her family and school friends, one of whom, Holly Murphy, has a new baby. But, as the Christmas Eve party is in full swing, the unthinkable happens—Ruth drops the baby, injuring the little boy. Or did she? Ruth becomes convinced she didn’t cause the baby’s injuries, that they were inflicted before the party, that the Murphys are not the lovely family they appear to be.

Christmas Eve, 2019. Ninety-four-year-old Molly lies in her hospital bed. A stroke and a fall may have broken her body - but her mind is alive with memories. London, 1940s. Molly is a bright young woman, determined to help the war effort and keep her head up despite it all. Life becomes brighter when she meets and falls in love with a man who makes her forget everything with one dance. But then war forces her to make an unforgettable sacrifice.

DI Kate Young is on leave. She’s the force’s best detective, but her bosses know she’s under pressure, on medication and overcoming trauma. So after her bad judgement call leads to a narrowly averted public disaster, they’re sure all she needs is a rest. But when Staffordshire Police summon her back to work on a murder case, it’s a harder, more suspicious Kate Young who returns. With a new ruthlessness, she sets about tracking down a clinical, calculating serial killer who is torturing victims and leaving clues to taunt the police.

Maria and William seem to have it all: two happy children, a beautiful house, a thriving business. But when their home is invaded by David, an ex-employee with a score to settle, the couple face a terrifying fight to survive. During the course of one hellish night, David picks apart their carefully constructed life. Secrets are unearthed, truths revealed. And soon David begins to wonder if he’s bitten off more than he can chew—because he’s discovering Maria and William are not the defenseless couple he imagined.

Josie always forgets what she's done when she’s drunk. There are huge black holes where her memories should be, and that's why she’s not going to drink anymore. She might not remember everything, but she knows she’s different when she drinks. She becomes someone that she doesn't like.

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.

Callie was living in a ten-acre home in the stunning Adirondacks with her husband. She missed her son, who was away at college, but she was coping pretty well with her empty nest. Then, the nightmare began. Her husband Abel skidded off the road into an icy lake. His truck hit a tree and plunged into the frigid water below. Now, this once-vital 43-year-old carpenter lies in a coma, surrounded by bleeping machines and the hushed rumble of the ward at Pearl Medical Center in Vermont. The police say it was an accident, but the details remain murky.

The day after her ninth birthday, Lucie and Blake Sullivan agree, for the very first time, to let their daughter, Grace, make the four-minute walk back home alone from a friend’s house down the street. They joke with friends about hiding behind bushes to ensure she is safe. But the joke turns sour when Grace does not appear. Despite the best efforts of the police and local community, Grace seems to have vanished into thin air. With hope fading fast, Lucie knows she can rely on her husband to support her. That is until the day she makes a shocking discovery....

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.