Across Europe, a young woman with no name and no fixed appearance hops from empty villa to vacated apartment to dormant summer house under the guise of house sitter. Her agenda? Steal from the rich, and kill anyone who gets in her way. On a stormy night in England, travelling home down narrow country lanes, a fatal car crash leaves Kat’s husband Oliver dead. But as Kat begins to mourn his loss, she discovers something that suggests she never knew her husband at all.

Today–with just one month until Tom is to be declared legally dead–Rachel receives a note in handwriting she recognizes with dread: My darling, I’ve missed you so much. Give me a chance to explain. I’m coming home. The husband she’d lost is alive. And so are all his secrets....

To the outside world, the Goodlights are perfect. Julia is a lawyer, Paul a stay-at-home dad who has dedicated his life to helping their daughter Chrissie achieve her dreams as a talented violinist. But on the night of a prestigious music competition, which has the power to change everything for Chrissie and her family, Chrissie goes missing. She puts on the performance of a lifetime, then completely disappears. Suddenly every single crack, every single secret that the family is hiding risks being exposed. Because the Goodlights aren’t perfect. Not even close.

She should have been safe. But she never came home. Kath has lived on the same London estate for decades. Lately she’s become friendly with the little girl next door, who is often left alone for hours while her mum is at work. They have a system. When Mina gets home from school to the empty flat, she knocks on the wall three times. Knock, knock, knock. I’m home safe and sound. But one day Mina’s knock doesn’t come. Kath raises the alarm and the police begin the search. Kath was the only person looking out for Mina—now she might be the only one who can bring her home.

Kathy Hamilton drives away from her sister-in-law’s pristine-white suburban house in Maple Falls certain she’s left her daughter in safe hands. On the hottest day of the year, a birthday is the perfect excuse to gather friends, family, and neighbors around the pool for a barbecue. But when she returns hours later to find her little girl has vanished, her world shatters.

Bella has the perfect life with her husband Jack and their two children – until the ex who stalked her years ago is released from prison. Now Bella is convinced he’s back to hurt her, and sees him everywhere – but no one else can see that anything is wrong. With her family away for the weekend, Bella determines to leave the past in the past – but she’s about to discover the danger is closer to home than she ever imagined.

The summer in question started out with hot, fun-filled days and new friendships. We had just turned thirteen and had our whole lives ahead of us. But that was before her. Before we became known as the Hixton Five and our lives become defined by one night. It’s hard to believe twenty years have passed since she was locked away. But now she’s free and strange things have started to happen. When I close my eyes, the creeping anxiety and fear is overwhelming and all too real. Because the monster is back, and I know she has a score to settle with us.

Nick Anthony has retreated to the North Carolina mountains to mourn the untimely death of his wife. Once a popular professor, Nick just wants to be left alone with his grief. But when his estranged brother and sister-in-law die in a house fire, a stunned Nick learns he has a niece, Annalise, who is missing. At the scene of the crime, the men who set the fire have realized Annalise, and the information they are looking for, got away. Feverish and exhausted, she stumbles onto her uncle's porch.

Jennifer Barnes never expected the shocking news she received at a routine doctor’s appointment: she has a terminal brain tumor - and only six weeks left to live. While stunned by the diagnosis, the 48-year-old mother decides to spend what little time she has left with her family - her adult triplets and twin grandsons - close by her side. But when she realizes she was possibly poisoned a year earlier, she’s determined to discover who might have tried to get rid of her before she’s gone for good.

When Rachel moves into a new apartment with her young daughter, Lily, it’s with a huge sense of relief. After escaping an abusive marriage, this perfect downtown fourth-floor rental, within minutes from the lake, feels like the new beginning the two of them deserve. But soon handwritten letters begin to arrive for someone called Annie. Alex says she was just the tenant who lived there before, who moved out one day without a word. Tentatively Rachel opens the first letter, intending to return it to the sender. 

Mila and her husband Ethan are on their way to her sister’s wedding at a luxurious ski resort. As they drive through the mountains, surrounded by snow covered forests, Mila feels like everything is finally going to plan. When the car engine suddenly stops and won’t start again. Stranded, with night closing in, they make their way on foot back to where they saw a sign for some cabins. When they finally reach them, they find the windows boarded up and the buildings in disrepair. They have the eerie sense they shouldn’t be there.

Six friends travel to a remote island north of the Scottish Highlands for an old school reunion. They’ve rented the Lighthouse—a stunning, now abandoned building that was once notorious for deaths at sea. On the first evening, someone goes missing. The group search all through the night to no avail. But when the five remaining friends return to the lighthouse early the next morning, they are shocked to find James inside. He’s looks terrified—but won’t say a word about where he’s been.

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.

Frances Brookman has just received the phone call every mother dreads. Her daughter Naomi has been in a life-threatening accident. As she races to the hospital, Frances catches sight of a child in another car – a girl screaming for help. It's a split-second thing and looks can be deceptive. She could follow the car, but can she live with the delay getting to her daughter? If she does nothing, can she live with herself?

Jo Carter never thought she'd return to Clear Springs, Minnesota. But when the former journalist receives a cryptic note about the disappearance of her friend Sam twenty years before, she's compelled to find out what really happened. During her investigation, she learns another high school friend has died in a mysterious accident. Nothing is as it seems, and Jo must probe Clear Springs' darkest corners and her own painful and unreliable memories to discover the truth - and save herself from the killer who could still be on the hunt.