When Nora takes the train from London to visit her sister in the countryside, she expects to find her waiting at the station, or at home cooking dinner. But when she walks into Rachel’s familiar house, what she finds is entirely different: her sister has been the victim of a brutal murder. Stunned and adrift, Nora finds she can’t return to her former life. An unsolved assault in the past has shaken her faith in the police, and she can’t trust them to find her sister’s killer.

A producer at the BBC and mother to a new baby, Tessa is at work in Belfast one day when the news of another raid comes on the air. The IRA may have gone underground in the two decades since the Good Friday Agreement, but they never really went away, and lately bomb threats, security checkpoints, and helicopters floating ominously over the city have become features of everyday life. As the news reporter requests the public's help in locating those responsible for the robbery, security footage reveals Tessa's sister, Marian, pulling a black ski mask over her face.

Twenty-two-year-old Olivia has been missing for one day…and counting. She was last seen on CCTV, entering a dead-end alley. And not coming back out again. Julia, the detective heading up the search for Olivia, thinks she knows what to expect. A desperate family, a ticking clock, and long hours away from her husband and daughter. But she has no idea just how close to home this case is going to get.

High-powered businesswoman Lana Rubicon has a lot to be proud of: her keen intelligence, impeccable taste, and the L.A. real estate empire she’s built. But when she finds herself trapped 300 miles north of the city, convalescing in a sleepy coastal town with her adult daughter Beth and teenage granddaughter Jack, Lana is stuck counting otters instead of square footage—and hoping that boredom won’t kill her before the cancer does.

Jess needs a fresh start. She’s broke and alone, and she’s just left her job under less than ideal circumstances. Her half-brother Ben didn’t sound thrilled when she asked if she could crash with him for a bit, but he didn’t say no, and surely everything will look better from Paris. Only when she shows up – to find a very nice apartment, could Ben really have afforded this? – he’s not there.

Northern Ireland, spring 1981. Hunger strikes, riots, power cuts, a homophobic serial killer with a penchant for opera, and a young woman’s suicide that may yet turn out to be murder: on the surface, the events are unconnected, but then things—and people—aren’t always what they seem. Detective Sergeant Duffy is the man tasked with trying to get to the bottom of it all. It’s no easy job—especially when it turns out that one of the victims was involved in the IRA but was last seen discussing business with someone from the loyalist Ulster Volunteer Force.

It is midnight on the morning of Halloween, and Jen anxiously waits up for her 18-year-old son, Todd, to return home. But worries about his broken curfew transform into something much more dangerous when Todd finally emerges from the darkness. As Jen watches through the window, she sees her funny, seemingly happy teenage son stab a total stranger.

In a windswept British seaside town, single mum Alice Lake finds a man sitting on the beach outside her house. He has no name and no idea how he got there. Against her better judgment, she invites him inside. Meanwhile, in a suburb of London, 21-year-old Lily Monrose has been married for only three weeks. When her husband fails to come home from work one night, she is left alone in a place where she knows no one and with the police telling her that her husband never existed.

It’s been a decade since Trumanell Branson disappeared, leaving only a bloody handprint behind. Her pretty face still hangs like a watchful queen on the posters on the walls of the town’s Baptist church, the police station, and in the high school. They all promise the same thing: We will find you. Meanwhile, Tru's brother, Wyatt, lives as a pariah in the desolation of the old family house, cleared of wrongdoing by the police but tried and sentenced in the court of public opinion and in a new documentary about the crime.

Early one morning on the shore of the Thames, DCI Samuel Owusu is called to the scene of a gruesome discovery. When Owusu sends the evidence for examination, he learns the bones are connected to a cold case that left three people dead on the kitchen floor in a Chelsea mansion thirty years ago. Rachel Rimmer has also received a shock—her husband, Michael, has been found dead in the cellar of his house in France. All signs point to an intruder, and the French police need her to come urgently to answer questions about Michael and his past that she very much doesn’t want to answer.

Two days ago, the Wilson family checked into the imposing, glass-fronted Lodge, surrounded by snow and perched perilously on the edge of a cliff looking out to a gray sea. Not everyone was looking forward to the family get-together. But mother-in-law Angela insisted the winter trip would help heal their rifts....

It’s the holiday season and Harriet Reed, a novelist on the brink of literary stardom, is newly engaged to Edward Holbeck, the heir of an extremely powerful family. And even though Edward has long tried to sever ties with them, news of the couple’s upcoming marital bliss has the Holbecks inching back into their lives with one invite after another.

Adelaide Hills, Christmas Eve, 1959. At the end of a scorching hot day, a local deliveryman makes a terrible discovery. A police investigation is called, and the small town of Tambilla becomes embroiled in one of the most shocking and perplexing murder cases in the history of South Australia. Many years later and thousands of miles away, Jess is a journalist in search of a story. Having lived and worked in London for nearly two decades, she now finds herself laid off from her full-time job and struggling to make ends meet. Until a phone call out of nowhere summons her back to Sydney.

Flynn was only a teenager when her parents were killed in a terrible accident. Too young to lose her parents, too young to take on responsibility for her younger sister Kaiya, too young to protect Kaiya from the harshness of their new lives in the following years. Desperate to help her sister, Flynn reaches out to Willa Tomlinson, a grief counsellor renowned for helping her patients cope with profound loss. Under Willa’s influence and care, Kaiya finally seems to turn a corner, joining the climate action collective that Willa leads.

Ashlee Parker is dead, and Emily Shepherd's dad is accused of the crime. A former soldier suffering from PTSD, he emerges from the woods carrying the girl's broken body. "Gone," he says, then retreats into silence. What really happened that wild night? Emily knows in her bones that her father is innocent - isn't he? Before he's convicted, she's got to uncover the truth. Does Damon Hilary, Ashlee's charismatic boyfriend, have the answers? Or is he only playing games with her...the kinds of games that can kill?