It’s a simple enough favor. Jude hasn’t seen Liam in years, but when he shows up at her work asking for a favor, she finds she can’t refuse. All Jude has to do is pick Liam up at a country train station—without telling anyone. So what if she has to lie to her fiancé? Jude is still committed to him and their imminent wedding, even if she and Liam were in love once. She owes him.

Ellie Falkner’s world has been destroyed. Her husband, Greg, died in a car crash - and he wasn’t alone. In the passenger seat was the body of Milena Livingstone, a woman Ellie’s never heard of. But Ellie refuses to leap to the obvious conclusion, despite the whispers and suspicions of those around her. Maybe it’s the grief, but Ellie has to find out who this woman was - and prove Greg wasn’t having an affair. And soon she is chillingly certain their deaths were no accident.

Imogen and Beck, two sisters who couldn't be more different, have been friends with Tilda since high school. Once inseparable, over two decades, the women have grown apart. But after Imogen survives a traumatic attack, Beck suggests they all reunite to hike deep into the Grand Canyon’s backcountry. A week away, secluded in nature...surely it’s just what they need. But as the terrain grows tougher, tensions from their shared past bubble up. And when supplies begin to disappear, it becomes clear secrets aren’t the only thing they’re being stalked by.

Recently laid-off from his newspaper and desperate for work, war correspondent Nick Bishop takes a humbling job: writing a profile of a new mindfulness app called Clarity. It’s easy money, and a chance to return to his hometown for the first time in years. The app itself seems like a retread of old ideas — relaxing white noise and guided meditations. But then there are the “Sleep Songs.” A woman’s hauntingly beautiful voice sings a ballad that is anything but soothing — it’s disturbing, and more of a warning than a relaxation — but it works.

Chloe is one of seven students at her DC-based college who are part of an unusual clinical study of psychopaths - students like herself who lack empathy and can’t comprehend emotions like fear or guilt. The study, led by a renowned psychologist, requires them to wear smart watches that track their moods and movements. When one of the students in the study is found murdered in the psychology building, a dangerous game of cat and mouse begins, and Chloe goes from hunter to prey.

On a beautiful October morning in rural Maine, a homicide investigator from the state police pulls into the hard-luck town of Copper Falls. The local junkyard is burning, and the town pariah Lizzie Oullette is dead - with her husband, Dwayne, nowhere to be found.

When Bonnie Graham arrives at her boyfriend’s apartment in London, she is horrified to discover a dead body in a pool of blood on the floor. But she doesn’t call the police. Bonnie hides the corpse and then carefully wipes away any evidence she was ever there. Bonnie is a music teacher who spent a long, hot summer in London rehearsing with a band to play at a friend’s wedding. It was supposed to be fun, but the band members find the complicated knots of their friendships - some old, some new - unraveling as the days themselves unwind.

It should have been just a mid-life fling. A guilty indiscretion that Neve Connolly could have weathered. An escape from 20 years of routine marriage to her overworked husband, and from her increasingly distant children. But when Neve pays a morning-after visit to her lover, Saul, and finds him brutally murdered, their pied-à-terre still heady with her perfume, all the lies she has so painstakingly stitched together threaten to unravel.

Newlyweds Lina and Cain don’t make it out to their property on gorgeous Lake Tarawera as often as they’d like, so when Cain suggests they rent the house out to vacationers, Lina reluctantly agrees. While the home has been in her family for generations, they could use the extra money. And at first, Lina is amazed at how quickly guests line up, and at how much they’re willing to pay. But both Lina and Cain have been keeping secrets, secrets that won’t be put off by fresh paint or a new alarm system. And someone has been watching them.

On the muddy banks of the Calumet River, a body has been found posed next to a series of mysterious glyphs and bearing wounds from a ritualistic slaying. Chicago detective Addie Bisset knows only one man who can decipher the message left by the killer: her friend Dr. Evan Wilding. A brilliant forensic semiotician, Evan decodes the etchings as Viking Age runes. They suggest either human sacrifice or righteous punishment. But to what god? And for what sins? Only one thing is clear from the disturbing runic riddles: there are more victims to come.

Celebrating her forty-fifth birthday at her local pub, popular podcaster Alix Summer crosses paths with an unassuming woman called Josie Fair. Josie, it turns out, is also celebrating her forty-fifth birthday. They are, in fact, birthday twins. A few days later, Alix and Josie bump into each other again, this time outside Alix’s children’s school. Josie has been listening to Alix’s podcasts and thinks she might be an interesting subject for her series. She is, she tells Alix, on the cusp of great changes in her life.

Camille Gardener is a grieving - and angry - mother who, five years after her daughter’s death, is still obsessed with the privileged young man she believes to be responsible. When her rash actions draw the attention of a secret group of women - the collective - Camille is drawn into a dark web where these mothers share their wildly different stories of loss as well as their desire for justice in a world where privilege denies accountability. Fueled by mutual rage, the collective members devise and act out retribution fantasies via anonymous, highly coordinated revenge killings.

Ruth is a no-nonsense 40-something journalist from the Midwest desperate for a child with her new husband, Hal. Their hope rests with Cally, a 19-year-old who wants to go to college - but doesn’t have the cash. The arrangement seems perfect for everyone. But within a day of the baby’s birth, Cally has a change of heart - and engineers a harrowing escape from the hospital with the newborn. When Ruth and Hal discover that Cally and their daughter are gone, a whole series of doubts and secrets is revealed, and the difference between right and wrong is no longer clear.

It happened the day of the Moon Festival. It could have been left behind, they all could have moved on with their lives. But secrets have a habit of rising to the surface, especially in small towns. Two couples, four ironclad friendships, the perfect coastal holiday town. With salt-stung houses perched like lifeguards overlooking the shore, Lago Point is the scene of postcards, not crime scenes. Wife and mother Abbi, town cop Blake, schoolteacher Hannah and local doctor Will are caught in their own tangled webs of deceit.

On a beautiful summer night in a charming English suburb, a young woman and her boyfriend disappear after partying at the massive country estate of a new college friend. One year later, a writer moves into a cottage on the edge of the woods that border the same estate. Known locally as the Dark Place, the dense forest is the writer’s favorite place for long walks and it’s on one such walk that she stumbles upon a mysterious note that simply reads, “DIG HERE.”

It’s a simple enough favor. Jude hasn’t seen Liam in years, but when he shows up at her work asking for a favor, she finds she can’t refuse. All Jude has to do is pick Liam up at a country train station—without telling anyone. So what if she has to lie to her fiancé? Jude is still committed to him and their imminent wedding, even if she and Liam were in love once. She owes him.

London cycle courier Astrid Bell has known most of her housemates for years, but while they have a tangled history together - romantic pairings, one-night stands, friendships - they each have secrets. Astrid is on her way home one day when her neighbor accidentally knocks her off her bike. Suffering a few bruises, her roommates help her home. The next day, they learn that same neighbor was bludgeoned to death only hours after the accident.

It should have been just a mid-life fling. A guilty indiscretion that Neve Connolly could have weathered. An escape from 20 years of routine marriage to her overworked husband, and from her increasingly distant children. But when Neve pays a morning-after visit to her lover, Saul, and finds him brutally murdered, their pied-à-terre still heady with her perfume, all the lies she has so painstakingly stitched together threaten to unravel.

Ellie Falkner’s world has been destroyed. Her husband, Greg, died in a car crash - and he wasn’t alone. In the passenger seat was the body of Milena Livingstone, a woman Ellie’s never heard of. But Ellie refuses to leap to the obvious conclusion, despite the whispers and suspicions of those around her. Maybe it’s the grief, but Ellie has to find out who this woman was - and prove Greg wasn’t having an affair. And soon she is chillingly certain their deaths were no accident.

When Bonnie Graham arrives at her boyfriend’s apartment in London, she is horrified to discover a dead body in a pool of blood on the floor. But she doesn’t call the police. Bonnie hides the corpse and then carefully wipes away any evidence she was ever there. Bonnie is a music teacher who spent a long, hot summer in London rehearsing with a band to play at a friend’s wedding. It was supposed to be fun, but the band members find the complicated knots of their friendships - some old, some new - unraveling as the days themselves unwind.

On the day of Alec Salter’s fiftieth birthday party, his wife, Charlotte, vanishes. Most of the small English village of Glensted is at the party for hours before anyone realizes she is missing. While Alec brushes off her disappearance, their four children—especially fifteen-year-old Etty—grow increasingly anxious as the cold winter hours become days and she doesn’t return. Then Etty and her friend Morgan find the body of Morgan’s father—and the Salters’ neighbor— Duncan Ackerley, floating in the river.

Astrid Bell has known most of her roommates for years, but while they have a history together - romantic pairings, one-night stands, friendships - each of them also has a past. Astrid is on her way home one day when her neighbor knocks her off her bike. Seeing she is bruised but not broken, her roommates help her home. The next day, they learn that same neighbor was beaten to death hours later. Each of them tells the police what they know and are dismissed - until Astrid stumbles over another body.

Abbie Devereaux lies flat on her back, her arms and legs tied down, her head covered with a hood. She senses the eyes that watch her. She feels the unknown hands that touch her in the dark. She knows she has been kidnapped but has little memory of her recent past. And she knows that all she has to do is stay alive, even though everything she is experiencing tells her she won't.

Lo Blacklock, a journalist who writes for a travel magazine, has just been given the assignment of a lifetime: a week on a luxury cruise with only a handful of cabins. The sky is clear, the waters calm, and the veneered, select guests jovial as the exclusive cruise ship, the Aurora, begins her voyage in the picturesque North Sea. At first Lo's stay is nothing but pleasant: The cabins are plush, the dinner parties are sparkling, and the guests are elegant. But as the week wears on, frigid winds whip the deck, and gray skies fall.

Tabitha is not a murderer. When a body is discovered in Okeham, England, Tabitha is shocked to find herself being placed in handcuffs. It must be a mistake. She’d only recently moved back to her childhood hometown, not even getting a chance to reacquaint herself with the neighbors. How could she possibly be a murder suspect? As Tabitha is shepherded through the system, her entire life is picked apart and scrutinized - her history of depression and medications, her decision to move back to a town she supposedly hated, and her past relationship with the victim, her former teacher.