This was meant to be the perfect trip. The northern lights. A press launch on a luxury cruise ship. A chance for travel journalist Lo Blackwood to recover from a traumatic break-in that has left her on the verge of collapse and to work out what she wants from her relationship. Except things don't go as planned. Woken in the night by screams, Lo rushes to her window to see a body thrown overboard from the next-door cabin. But the records show that no one ever checked in to that cabin, and no passengers are missing from the boat.

French Alps, 1998. Two young men ski into a blizzard...but only one returns. Twenty years later. Four people connected to the missing man find themselves in that same resort. Each has a secret. Two may have blood on their hands. One is a killer-in-waiting. Someone knows what really happened that day. And somebody will pay. 

When she stumbles across the advert, she's looking for something else completely. But it seems like too good an opportunity to miss: a live-in nanny position, with a staggeringly generous salary. And when Rowan arrives at Heatherbrae House, she is smitten by the luxurious 'smart' home fitted out with all modern conveniences, by the beautiful Scottish Highlands, and by this picture-perfect family. What she doesn't know is that she's stepping into a nightmare - one that will end with a child dead and her in a cell awaiting trial for murder.

Someone's getting married. Someone's getting murdered. Nora hasn't seen Clare for 10 years. Not since Nora walked out of school one day and never went back. Until, out of the blue, an invitation to Clare’s hen do arrives. Is this a chance for Nora to finally put her past behind her? But something goes wrong. Very wrong.

When Amelia is invited to an all-expenses-paid retreat on a private island, the mysterious offer is too good to refuse. Along with six other strangers, she’s told they’re here to test a brand-new product for Timeo Technologies. But the guests’ excitement soon turns to terror when the real reason for their summons becomes clear. Each guest has a guilty secret. And when they’re all forced to wear a memory-tracking device that reveals their dark and shameful deeds to their fellow guests, there’s no hiding from the past. This is no luxury retreat - it’s a trap.

The text message is just three words: I need you. Isa Leigh drops everything, packs up her baby daughter and heads straight to Salten, where she and her three best friends attended prestigious boarding school Salten House. Only Kate still lives in the area, at the crumbling Tide Mill she inherited when her disgraced art tutor father vanished when she was just 17. Each of the women is running from something, from an act that has haunted them for many years but which they have tried their best to bury.

At the intimate house-warming party for her glorious ‘grand design’, Kathleen confides in her best friend, Beth, that she is terrified of one of their close friends but daren’t reveal which one. The guests are a tight-knit group, but Kathleen is convinced one of them is dangerous. The next day Kathleen’s body is found at the foot of a cliff, and Beth must face the sickening truth that she may have been killed by one of their trusted friends. With little help from the police, Beth’s decides to seek answers.

Cal Hooper thought a fixer-upper in a remote Irish village would be the perfect escape. After 25 years in the Chicago police force and a bruising divorce, he just wants to build a new life in a pretty spot with a good pub where nothing much happens. But then a local kid comes looking for his help. His brother has gone missing and no one, least of all the police, seems to care. Cal wants nothing to do with any kind of investigation, but somehow he can't make himself walk away.

Charles and Grace wanted a quiet staycation honeymoon, but when their train terminates early due to a storm up ahead, they wonder if they made the wrong decision. Forced to take shelter in the nearest seaside town, Saltwater, they discover that there is only one guesthouse left. Unlike the rest of Saltwater, the Anchorage is entirely deserted. That night, with the storm howling relentlessly, Grace is woken by a child crying. She is haunted by the sound, until Charles convinces her it was only her imagination. But the next day, she finds a warning scrawled in the guest book.

Leah has spent her formative years isolated on a remote island with her family. But their quiet existence, far from the devastated mainland, is cracking. Father, sensing a coming threat, demands that a wall be built. As the stone blockade rises, Father’s paranoia escalates. So does Leah’s dread that the violence the family left behind has found its way to their sanctuary. 

A stranger died to save you...now it’s your turn. Meet Beth Turner. From the outside she looks like any other 33-year-old woman, with a gorgeous house and beautiful daughter. But Beth has a secret that has haunted her past for as long as she can remember. A secret that only those closest to her know. Aged seven, she almost drowned on a family holiday...and a stranger died saving her life. Survivor's guilt has been the defining characteristic of her life ever since. 

An imposing, isolated hotel, high up in the Swiss Alps, is the last place Elin Warner wants to be. But she's taken time off from her job as a detective, so when she receives an invitation out of the blue to celebrate her estranged brother's recent engagement she has no choice but to accept. Arriving in the midst of a threatening storm, Elin immediately feels on edge. Though it's beautiful, something about the hotel, recently converted from an abandoned sanatorium, makes her nervous - as does her brother, Isaac.

Orla and Kate have been best friends forever. Together they’ve faced it all – be it Orla’s struggles as a new mother or Kate’s messy divorce. And whatever else happens in their lives, they can always look forward to their annual weekend away. This year, they’re off to Lisbon: the perfect flat, the perfect view, the perfect itinerary. And what better way to kick things off in style than with the perfect night out? But when Orla wakes up the next morning, Kate is gone.

Nick and Amber Miller are splitting up and selling their Devon family home. But despite the desirable location, the house isn’t moving. Not a single viewing so far. When their estate agent suggests an open house event, Amber agrees, even as she worries about their gossiping neighbours attending and snooping around their home.

In less than half a minute, a home-security camera captures the hidden resolve in 14-year-old Carly Liddell as she fends off a vicious attack just inside her own front door. The video of her heroic escape appears Online and goes viral. As the view count climbs, the lives of four desperate people will be forever changed by what’s just barely visible in the corner of the shot. Carly’s stepfather is spurred to protect his darkest secret: how a stolen painting - 400 years old, by a master of the Dutch Golden Age - has come to hang in his suburban foyer.