It was their darkest secret. Three schoolgirls made a promise - to take the horrible truth of what they did to the grave. Thirty years later, Beth and Sally have tried to put the trauma behind them. Though Carol has distanced herself from her former friends, the three are adamant that the truth must never come to light, even if the memory still haunts them. But when some shocking news threatens to unearth their dark secret, Beth enlists the help of private investigator Matthew Hill to help her and Sally reconnect with estranged Carol.

It’s their daughter’s graduation and Rachel and Ed Hartley are expecting it to be one of their family’s happiest days. But when she stumbles and falls on stage during the ceremony, a beautiful moment turns to chaos: Gemma has been shot, and just like that, she’s fighting for her life. PI Matthew Hill is one of the first on the scene. A cryptic message Gemma received earlier in the day suggests someone close to her was about to be exposed. But who?

When Ella Longfield overhears two attractive young men flirting with teenage girls on a train, she thinks nothing of it - until she realises they are fresh out of prison and her maternal instinct is put on high alert. But just as she’s decided to call for help, something stops her. The next day, she wakes up to the news that one of the girls - beautiful, green-eyed Anna Ballard - has disappeared.

After a betrayal that sent their marriage into freefall, Hannah and Sam are desperate for a fresh start with their eight-year-old daughter Lily—and where better than picture-perfect Owl Cottage in beautiful Cornwall. But something about the holiday home stirs dark memories for Hannah… When she finds dead creatures on the doorstep and hears mysterious knocks at the door, Hannah can’t help wondering whether someone is messing with her—or whether the past she’s been running from has finally claimed her sanity.

On a train with her husband, miles from home and their four-year-old son, Ben, Sophie receives a chilling phone call. Two boys are in hospital after a tragic accident. One of them is Ben. She thought she could trust Emma, her new friend, to look after her little boy. After all, Emma’s a kindred spirit—someone Sophie was sure she could bare her soul to, despite the village rumours. But Sophie can’t shake the feeling that she’s made an unforgivable mistake and now her whole family is in danger.

After twenty years apart, Matthew and Helena have rekindled their college romance and are away in Iceland on their first holiday together. Swept up in the romance on a mountain hike, one moment they are taking the perfect photo, the next Helena is hanging from the cliff edge…

Of course, I’m not going to murder her in the night. I need my laptop back first. That’s the whole point of making friends with Emily Harper, author of the hugely successful novel Diary of an Octopus. So I could get into her apartment and take back what’s mine. Emily doesn’t know who I really am. She thinks I’m her biggest fan, her new best friend who happens to need a place to stay for a few days. She doesn’t realize the laptop she found—and took—from a busy airport almost two years ago was mine. I don’t care about the laptop, just what's on it: my diary.

Mia and Finn are busy turning a derelict house into their dream home when Mia unexpectedly falls pregnant. But just when they think the house is ready, Mia discovers a shocking message scored into a skirting board: I WILL SAVE THEM FROM THE ATTIC. Following the clue up into the eaves, the couple make a gruesome discovery: their home was once a real-life murder house, with the evidence still concealed within the four walls.

For Helen and George, the remote fixer-upper in Cornwall was supposed to be a dream home, and a way to leave behind the problems they’re both running from. But something about the place feels wrong from day one. And why does Helen have a creeping feeling she’s seen this house before?

My darling little boy Albie adores playing at our new neighbours’ house. And after the terrible year we’ve had, I feel so lucky that we can start over in this perfect place, with new friends who treat Albie like the son they never had. He can’t stop talking about the tree house they’re building him, and the cookies they bake together. But as time passes, something starts to feel wrong. Why don’t they ever open the front door more than a crack? They told me they had no children so who does the small pink tricycle I saw in their hall belong to?

Jake and I were childhood sweethearts. Strong, dependable, and with a smile that melts my heart, he is the perfect husband and father to our beautiful little daughter. We have our money troubles–but getting a lodger, Kara, calms the panic I feel about our bills. Jake is reluctant but what choice do we have?

Alice and Seth are a perfect love story: the handsome doctor and his beautiful fiancée. They’re wealthy, well liked and made for each other—the envy of all their friends. Alice can’t wait for the day of their dream wedding. But when she arrives at the altar, she doesn’t recognise the man waiting to marry her. When this stranger insists he’s Seth, her husband-to-be, the entire congregation seems to agree. Even her parents try to persuade Alice to go through with the wedding.

It was a typical evening at a mall outside Portland, Maine. Three teenage friends waited for the movie to start. A boy flirted with the girl selling sunglasses. Mothers and children shopped together, and the manager at the video game store tended to customers. Then the shooters arrived. The chaos and carnage lasted only eight minutes before the killers were taken down. But for those who lived through it, the effects would last forever.

Shelby Tebow is the first to go missing. Not long after, Meredith Dickey and her six-year-old daughter, Delilah, vanish just blocks away from where Shelby was last seen, striking fear into their once-peaceful community. Are these incidents connected? After an elusive search that yields more questions than answers, the case eventually goes cold. Now, 11 years later, Delilah shockingly returns. Everyone wants to know what happened to her, but no one is prepared for what they'll find....

Alice has everything, I mean everything. A stunning suburban house, Instagram-perfect in its soft grey walls and textured neutrals. And then there's her handsome husband, with his flat stomach and that sexy sleeve of tattoos he keeps hidden for his well-paid job in the city. The PTA mamas can't stop staring at him, and who can blame them? And let's not forget her three adorable, well-behaved children. Meanwhile, here in Boston, I'm struggling to start a family with my husband Ollie. Our marriage is suffering, and I feel so isolated all the time.

After a betrayal that sent their marriage into freefall, Hannah and Sam are desperate for a fresh start with their eight-year-old daughter Lily—and where better than picture-perfect Owl Cottage in beautiful Cornwall. But something about the holiday home stirs dark memories for Hannah… When she finds dead creatures on the doorstep and hears mysterious knocks at the door, Hannah can’t help wondering whether someone is messing with her—or whether the past she’s been running from has finally claimed her sanity.

It was their darkest secret. Three schoolgirls made a promise - to take the horrible truth of what they did to the grave. Thirty years later, Beth and Sally have tried to put the trauma behind them. Though Carol has distanced herself from her former friends, the three are adamant that the truth must never come to light, even if the memory still haunts them. But when some shocking news threatens to unearth their dark secret, Beth enlists the help of private investigator Matthew Hill to help her and Sally reconnect with estranged Carol.

On a train with her husband, miles from home and their four-year-old son, Ben, Sophie receives a chilling phone call. Two boys are in hospital after a tragic accident. One of them is Ben. She thought she could trust Emma, her new friend, to look after her little boy. After all, Emma’s a kindred spirit—someone Sophie was sure she could bare her soul to, despite the village rumours. But Sophie can’t shake the feeling that she’s made an unforgivable mistake and now her whole family is in danger.

It’s their daughter’s graduation and Rachel and Ed Hartley are expecting it to be one of their family’s happiest days. But when she stumbles and falls on stage during the ceremony, a beautiful moment turns to chaos: Gemma has been shot, and just like that, she’s fighting for her life. PI Matthew Hill is one of the first on the scene. A cryptic message Gemma received earlier in the day suggests someone close to her was about to be exposed. But who?

When Ella Longfield overhears two attractive young men flirting with teenage girls on a train, she thinks nothing of it - until she realises they are fresh out of prison and her maternal instinct is put on high alert. But just as she’s decided to call for help, something stops her. The next day, she wakes up to the news that one of the girls - beautiful, green-eyed Anna Ballard - has disappeared.

Devon Mayes thought she was done with the small conservative town she once called home. She fled when she was eighteen after her best friend Summer took her own life, leaving Summer’s twin brother, Keaton, lost in his grief. But when tragedy strikes again, Devon has nowhere to turn but back to the place that first broke her heart. Being back in Arkana means struggling with the old guilt that shrouds her bisexuality and her feelings for Keaton. There’s so much she’s still hiding from him—and so much of their shared past that’s now resurfacing.

Seventeen-year-old Lies wakes up to find that her mother’s bed hasn’t been slept in. Her car is parked outside. And her purse and cell phone are still by the front door. After twenty-four hours, when every possible explanation is exhausted, the reality is all too frightening for Lies. Her mother is missing.

The deeper the secret, the darker the shadow. Ten years ago, Jolene nearly killed her friend Elizabeth in a gruesome accident. And no one has any idea. Not even Elizabeth. Jolene has been trying to outrun the guilt ever since, wandering from place to place and career to career. So she’s shocked when, after her latest move, she runs into the very person she’s been trying to avoid for ten years. Elizabeth still lives with scars from the accident. And she’s still clueless about what happened that fateful night.

Dr. Laurel Harlow can’t believe she’s agreed to do a reality TV show. But her years as a chemical dependency counselor and personal history with the show’s director make her the obvious choice. Treating a mansion full of former child stars on the road to recovery is the tallest order of her career—especially when one of them turns up dead while the cameras are still rolling.

Seventeen-year-old Theodora Briggs left home in the dead of night, after a brutal crime shattered her life. Thirteen years later, she’s made a name for herself as Gemma: beautician, wife, and mother. But the trauma still lingers… And then one day, it’s more than just a phantom pain. Gemma is suddenly accosted by stranger after stranger, all of whom seem to know the truth about her. They confront her with her real name and ominous allusions to the tragedy that drove her out of town. When her family begins to have their own strange episodes, Gemma is rattled.

Restauranteur Paddy Swann was the life of the party until the day a man pushed him in the path of an oncoming train, leaving his twenty-something daughter Ash and wife Nina devastated. Shortly after Paddy’s funeral, the two women receive a surprise in the mail: a note and package from Nick Radcliffe, an old friend of Paddy’s, and a nondescript lighter that once belonged to him decades ago. This unexpected gift draws Nick and Nina closer together—much to Ash’s dismay.

Ethan Dove’s family has moved to a new home in a safe community, and it’s exactly the fresh start they need. Not only is his marriage to Emma hanging by a thread, but his son, Dylan, and twelve-year-old daughter, Rose, deserve to have a happy childhood. After Rose is bullied by the boys across the road, Ethan is relieved when the woman who lives next door steps in. Fiona Smith has come into their lives at just the right moment, and when she offers to look after Rose during the school holidays, Ethan and Emma can’t believe their luck.

When her husband goes missing, Marissa Creighton fears the worst. Tell me you trust me was the last thing Ethan said to her, and she’d shrugged it off. Now she can’t get those words out of her head. Marissa’s family has always been her rock. But when they come to help her with eighteen-month-old Logan, their overprotectiveness borders on oppression—occupational hazard of the family’s surveillance business, or is it? Seeking comfort in the playlist she and Ethan share, Marissa is shocked to find a new song there: “Trust Me.” She’s certain it’s a message.

When Winona rents a room at the eccentric Mirror House, she hopes to make new friends. What she gets instead is a “family” led by the charismatic psychologist Simon Spellmeyer. But if she wants to stay at Mirror House, Winona must join in following Simon’s strange protocols for self-improvement. Warning bells chime inside her, but the allure of transformation keeps her hooked. While his methods are disturbing, the results are undeniable.

The people who call End of the Line need hope. They need reassurance that life is worth living. But some are unlucky enough to get through to Laura. Laura doesn’t want them to hope. She wants them to die. Laura hasn’t had it easy: she's survived sickness and a difficult marriage only to find herself heading for forty, unsettled and angry. She doesn't love talking to people worse off than she is. She craves it. But now someone’s on to her - Ryan, whose world falls apart when his pregnant wife ends her life, hand in hand with a stranger.