When Sasha receives a call from her old university friend Gabby inviting her to spend Christmas at Gabby’s remote Scottish lake house, Sasha knows she shouldn’t go. Twelve years ago, on Christmas Eve, when Sasha and her five closest friends were celebrating the festive season, something truly horrific happened that would change the course of their friendship forever. Something that meant Sasha hasn’t spoken to any of them since that night.

After the killing of a prominent mob lawyer, NYPD homicide detectives Jacob Jackson and Caitlin Grimes start receive chilling, written “rules” for how to commit the perfect murder. "Rule number one for the perfect murder: Evidence is your enemy. Leave none behind." Jackson (Reid Scott) and Grimes (Cobie Smulders) race to find the killer, setting them on a collision course with the city’s crime underbelly, and a perpetrator who seems happy to toy with them. “Rule number two. No crimes of passion. The perfect murder is always business, never pleasure.”

England, 1914. The world is at war. Captain Hastings, injured and shaken, is invited to Styles Court to recover. It’s a grand old country house - the family home of his old friend - and a perfect haven. Or so it seems. But in the blistering summer heat, trouble is afoot. Simmering tensions are tearing the family apart, and it all comes to a head in the most horrifying way.

Jenny sits in the same seat on the same train every week, seeing familiar faces come and go. Until a chance encounter shatters her world. Sixteen years ago, Jenny survived a traumatic ordeal that left her best friend, Susie, missing and presumed dead. The world has its theories about what happened to Susie Patterson, and one of those theories points the finger at Jenny. Now she lives a quiet life, volunteering at a crisis helpline while trying to deal with her own anxiety and the true crime fans obsessed with finding her missing friend.

Lowen Ashleigh is a struggling writer on the brink of financial ruin when she accepts the job offer of a lifetime. Jeremy Crawford, husband of best-selling author Verity Crawford, has hired Lowen to complete the remaining books in a successful series his injured wife is unable to finish. Lowen arrives at the Crawford home, ready to sort through years of Verity's notes and outlines, hoping to find enough material to get her started. What Lowen doesn't expect to uncover in the chaotic office is an unfinished autobiography Verity never intended for anyone to read.

Kidnappers grabbed Jenna in broad daylight, right in front of her children and their horrified classmates. Her family was issued an insane ransom demand: $25 million in cash and jewels, payable by the end of the school day, otherwise they’ll never see her again. As Jenna’s mother scrambles to gather the money, detectives Mo Butler and George Ortega follow the trail of the kidnappers, which will lead them through a sordid landscape of jealous lovers, broken dreamers, and twisted schemers. But every second counts, and there’s one thing Jenna Wade doesn’t have: very much time.

When Heather McKinley dreamed of becoming a doctor, she imagined curing sick kids and sporting pink stethoscopes. She never anticipated the sleepless nights, grueling exams, and endless labs. And she certainly never knew that her medical school earned the nickname Dead Med thanks to the tragic history of students overdosing on illegal drugs. But Heather would never consider doing anything like that. That is, until her longtime boyfriend dumps her, she finds herself failing anatomy, and her world starts to crumble.

Cassie thinks she has met the perfect man. Joel is sweet, handsome, romantic, and best of all, he’s crazy about Cassie. She thinks she’s found the guy she’ll spend the rest of her life with. Have children with. Grow old with. Yes, she knows about his perfect ex-girlfriend, Francesca. The beautiful, brilliant chef, beloved by all his friends. But she thinks Francesca is out of the picture. She thinks Francesca is gone for good. Think again, Cassie.

Jazz Bashara is a criminal. Well, sort of. Life on Artemis, the first and only city on the moon, is tough if you're not a rich tourist or an eccentric billionaire. So smuggling in the occasional harmless bit of contraband barely counts, right? Not when you've got debts to pay and your job as a porter barely covers the rent. Everything changes when Jazz sees the chance to commit the perfect crime, with a reward too lucrative to turn down.

Everyone thinks my husband is dead. Just like we planned. Eleven years ago, my husband disappeared. Eleven long hard years I waited, my heart breaking for our son, who didn’t know his father was coming back. Today, my hands shake as I try to understand what I’ve just learned: my husband has a new wife. This wasn’t part of our plan. Eleven years ago, my husband made a terrible mistake. I sacrificed everything to help him fix it. But now he’s put our son and me in danger again. We had a plan. He broke the rules. But who will pay the price?

I just met my new son-in-law . . . And he’s my ex-husband. They’re here. I watch them arrive from the kitchen window. My pregnant daughter and her new husband. They’ve barely known each other six months. I greet him with a tight smile that he recognizes as fake. Luke is no good for my beautiful, fragile Cerys. He’ll break her heart. I know that because he broke mine — when he was married to me. I don’t know what he’s after. But I’m going to make it my business to find out.

In their home in southern Louisiana, Iris and her husband Joseph were both shot point-blank in the head by an unknown assailant. She wakes with her memory fractured. She doesn't remember her husband's family, eager as they are to take her into their world of marble, maids, and prim Southern manners.

Amelia was deeply in love with her husband, Sam. Until she discovered he was having an affair with her younger sister, Cara. Ever since, Amelia has had to sit by at family events while her sister and ex-husband flaunt their passionate relationship. Tired of being seen as a loser, Amelia hires stunningly handsome actor, Damon Chase, to stand in as her boyfriend. A plan that works better than she ever hoped as pathologically competitive Cara throws herself at Damon, causing an acrimonious breakup with Sam.

When Polly signs up to an art retreat in the Lake District, it's an escape from the stress of recent months, when a stalker preyed on her and her friend. It's also an opportunity to find out more about her family history: Polly believes her biological mother once lived here, at Lakeside House. But things quickly turn sinister. The previous owners supposedly took their own lives here, years before – and the glamorous new owners are now receiving disturbing threats. Someone is sabotaging Polly's artwork. The five other guests on the retreat all seem to be hiding something.

We all have that friend—the one who doesn't quite belong. Dinah Marshall is that person and knows it. After someone drops out, she's invited to spend the weekend at a luxury holiday home with women she's known since university. However, the gulf between them has widened since then, and Dinah is conscious of being the only one with no money, career, partner or children. Feeling like an outsider, she takes to snooping around the house.

Then: Linda has it all: a gorgeous home, a devoted husband, two loving daughters. But she throws it all away to chase an impossible dream. Now: Linda is alone and penniless, living in a shabby rented flat. With nothing to lose, she signs up to a dating app for the over 50s. But the one man who responds to her profile, a man calling himself Tony Fortin, is not who he says he is. Linda recognises him immediately. He’s Marcus, her second husband. But that’s impossible. Marcus died eight months ago. He drowned off the coast of Corfu.

Sol Reyes has had a rough year. After a series of workplace incidents at her university lab culminates in a plagiarism accusation, Sol is put on probation. Dutiful visits to her homophobic father aren’t helping her mental health, and she finds her nightly glass of wine becoming more of an all-day—and all-bottle—event. Her wife, Alice Song, is far more optimistic. After all, the two finally managed to buy a house in the beautiful gated community of Maneless Grove. However, the neighbors are a little too friendly in Sol’s opinion.

Roos Beckman has a spirit companion only she can see. Ruth—strange, corpse-like, and dead for centuries—is the light of Roos' life. That is, until the wealthy young widow Agnes Knoop visits one of Roos' backroom seances, and the two strike up a connection.

Socially awkward Chloe Cooper divides her time between dog walking, bartending, caring for her ailing mother, and at a safe distance, watching people and inventing the stories of their lives. Like Chloe’s new neighbors: glamorous influencer Jemma Spengler and Jemma’s husband, Adam, a renowned surgeon. They’re attractive, wealthy, and in a house of open windows, so exposed.

Father Silence once terrorized the rural town of Twisted Tree, disguising himself as a priest to prey on the most vulnerable members of society. When the police finally found his House of Horrors, they uncovered nineteen bodies and one survivor–a boy now locked away in a hospital for the criminally insane. Nearly two decades later, Father Silence is finally put to death, but by the next morning, the detective who made the original arrest is found dead. A new serial killer is taking credit for the murder and calling himself the Outcast.