Amy Whey is proud of her ordinary life and the simple pleasures that come with it - teaching diving lessons, baking cookies for new neighbors, helping her best friend, Charlotte, run their local book club. But Amy’s sweet, uncomplicated life begins to unravel when the mysterious and alluring Angelica Roux arrives on her doorstep one book-club night. Something wicked has come her way - a she-devil in a pricey red sports car who seems to know the terrible truth about who she is and what she once did.

Psychiatrist Dr. Gwen Moore is an expert on killers. She’s spent a decade treating California’s most depraved predators and unlocking their motives - predators much like the notorious Bloody Heart serial killer, whose latest teenage victim escaped and then identified local high school teacher Randall Thompson as his captor. The case against Thompson as the Bloody Heart Killer is damning - and closed, as far as Gwen and the media are concerned. If not for one new development.

On a cold, rainy morning, finance journalist Ally Linden arrives soaked to the bone at her Manhattan office, only to find that she's forgotten her keycard. When her boss shows, he's shocked to see her - because, he explains, she hasn't worked there in five years. Ally knows her name, but is having trouble coming up with much beyond that, though after a trip to the psychiatric ER, she begins to piece together important facts: She lives on the Upper West Side; she's now a freelance journalist; she's married to a terrific man named Hugh.

They call themselves the May Mothers - a collection of new moms who gave birth in the same month. Twice a week, with strollers in tow, they get together in Prospect Park, seeking refuge from the isolation of new motherhood. When the group’s members agree to meet for drinks at a hip local bar, they have in mind a casual evening of fun, a brief break from their daily routine. But on this sultry Fourth of July night during the hottest summer in Brooklyn’s history, something goes terrifyingly wrong: one of the babies is taken from his crib.

Nina Landry awakens on her 40th birthday, anticipating a day filled with excitement. She, her new boyfriend, and her two children are taking a trip - leaving their home on Sandling Island, off the coast of England, for a dream vacation. As soon as her 15-year-old daughter, Charlie, returns from a sleepover, they can get ready to leave. But Charlie doesn’t come home at the expected time. As minutes and then hours tick by, Nina’s annoyance soon changes to concern, and then to a chilling certainty that something terrible has happened.

Actress Nora Kemp loves two men. One is Hugh Iverson, a philanthropic movie star who gives Nora security and respectability. The other is Hugh’s twin brother, Trent, a Hollywood bad boy who brings out Nora’s wild side. When Trent and an unidentified woman are found dead on the Iversons’ Beverly Hills property, more than Nora’s and Hugh’s reputations are at stake.

Journalist Joan Lurie has written a seething article exposing a notorious newspaper tycoon as a sexual predator. But the night it goes live, she is brutally attacked. Traumatized and suffering the effects of a concussion, she moves into a highly secure apartment in Manhattan called the Refuge, which was at one time a Magdalen Laundry. Joan should be safe here, so how can she explain the cryptic incidents that are happening?

One weekend, while Andrew Mason was on a fishing trip, his wife, Brie, vanished without a trace. Most everyone assumed Andy had got away with murder—it’s always the husband, isn’t it?—but the police could never build a strong case against him. For a while, Andy hit rock bottom—he drank too much to numb the pain, was abandoned by all his friends save one, nearly lost his business, and became a pariah in the place he once called home.

Emily Harlow is a professional organizer who helps people declutter their lives; she’s married to man who can’t drive past a yard sale without stopping. He’s filled their basement, attic, and garage with his finds. Like other professionals who make a living decluttering peoples’ lives, Emily has devised a set of ironclad rules. When working with couples, she makes clear that the client is only allowed to declutter his or her own stuff.

When Claire sees Hannah Wilson at an exclusive Manhattan hair salon, it's like a knife slicing through barely healed scars. It may have been 10 years since Claire last saw Hannah, but she has thought of her every day, and not in a good way. So Claire does what anyone would do in her position - she stalks her. Hannah is now Mrs. Carter, living the charmed life that should have been Claire's. It's the life Claire used to have before Hannah came along and took it all away from her.

Two days ago, the Wilson family checked into the imposing, glass-fronted Lodge, surrounded by snow and perched perilously on the edge of a cliff looking out to a gray sea. Not everyone was looking forward to the family get-together. But mother-in-law Angela insisted the winter trip would help heal their rifts....

It’s every parent’s worst nightmare: the call that comes in the middle of the night. When Kat Jenkins awakens to the police on her doorstep, her greatest fear is realized. Her nine-year-old son, Ethan, is missing - vanished from the cabin where he’d been on an overnight class trip. Shocked and distraught, Kat rushes to the campground, but she’s too late; the authorities have returned from their search empty-handed after losing Ethan’s trail in the mountain forest.

In an unthinkable flash, Emmy Fisher’s 15-year-old daughter, Leah, seemingly drowns close to shore one summer night - at least that is what the police report says. In deep grief, Emmy needs time and courage before she can enter Leah’s bedroom. But when she does, she finds something at first bewildering, then unspeakable, as she begins to understand the full implications.... She uncovers evidence that Leah had been secretly involved with someone, someone perhaps older, someone with dark appetites.

Lorraine—“Rainy”—lives at the top of Tiger Mountain. Remote, moody, cloistered in pine trees and fog, it’s a sanctuary, a new life. She can hide from the disturbing past she wants to forget. If she’s allowed to. When Rainy reluctantly agrees to a girls’ weekend in Vegas, she’s prepared for an exhausting parade of shots and slot machines. But after a wild night, her friend Braithe doesn’t come back to the hotel room.

If Avery Chambers can’t fix you in 10 sessions, she won’t take you on as a client. Her successes are phenomenal—she helps people overcome everything from domineering parents to assault—and almost absorbs the emptiness she sometimes feels since her husband’s death. Marissa and Mathew Bishop seem like the golden couple—until Marissa cheats. She wants to repair things, both because she loves her husband and for the sake of their eight-year-old son. After a friend forwards an article about Avery, Marissa takes a chance on this maverick therapist.

They call themselves the May Mothers - a collection of new moms who gave birth in the same month. Twice a week, with strollers in tow, they get together in Prospect Park, seeking refuge from the isolation of new motherhood. When the group’s members agree to meet for drinks at a hip local bar, they have in mind a casual evening of fun, a brief break from their daily routine. But on this sultry Fourth of July night during the hottest summer in Brooklyn’s history, something goes terrifyingly wrong: one of the babies is taken from his crib.

After my relationship breaks down, I agree to house-sit my brother Dexter's posh apartment whilst he’s out of the country. It will give me some much needed head space. Sitting on the balcony one sweltering summer's night in the midst of a power cut, I'm given a secret window into the lives of the residents in the opposite building, and I see more than I should. I'm drawn to a man in the Penthouse and watch him closely; when a striking woman joins him on the balcony, I can’t tear my eyes away.

When Sarah Larsen finds the notice, posted on creamy card stock in her building’s lobby, one glance at the exclusive address tells her she’s found her ticket out of a dead-end job - and life. At the interview, the job seems like a dream come true: a glamorous penthouse apartment on the Upper West Side of NYC; a salary that adds several zeroes to her current income; the beautiful, worldly mother of her charge, who feels more like a friend than a potential boss. She’s overjoyed when they offer her the position and signs the NDA without a second thought.

Ingrid will never forget what John did. The people he hurt. The way he lied about it so easily. The way she defended him. Now he’s back. He says a murderer is after her. He says only he can protect her. Would you trust him? The clock is ticking for Ingrid to decide. Because the killer is ready to strike again.

When Caz steps onboard the exclusive cruise liner RMS Atlantica, it’s the start of a vacation of a lifetime with her new love, Pete. On their first night they explore the ship, eat, dance, make friends, but when Caz wakes the next morning, Pete is missing. And when she walks out into the corridor, all the cabin doors are open. To her horror, she soon realizes that the ship is completely empty. No passengers, no crew, nobody but her. The Atlantica is steaming into the mid-Atlantic and Caz is the only person on board. But that’s just the beginning.

Mike Hayes fought his way out of a brutal childhood and into a quiet if lonely life - before he met Verity Metcalf. V taught him about love, and in return Mike has dedicated his life to making her happy. He’s found the perfect home, the perfect job; he’s sculpted himself into the physical ideal V has always wanted. He knows they’ll be blissfully happy together. It doesn’t matter that she hasn’t been returning his emails or phone calls. It doesn’t matter that she says she’s marrying Angus. It’s all just part of the secret game they used to play.

Rookie cop Carrie Santero has always been fascinated by serial killers. As a teenager, she wrote a letter to Charles Manson in prison - and received a chilling reply. Then she came face to face with a child murderer in her small Pennsylvania town, an encounter that haunts her to this day. Now, as a detective in training, she finally has her chance to make a difference; to hunt down a psychopathic sadist who embodies the very nature of evil itself.

Emma Carpenter lives in isolation with her golden retriever Laika, house-sitting an old beachfront home on the rainy Washington coast. Her only human contact is her enigmatic old neighbor, Deek, and (via text) the house’s owner, Jules. One day, she reads a poorly written—but gruesome—horror novel by the author H. G. Kane, and posts a one-star review that drags her into an online argument with none other than the author himself. Soon after, disturbing incidents start to occur at night.

While in college in upstate New York, Shay Evans and her best friends met a captivating man who seduced them with a web of lies about the way the world works, bringing them under his thrall. By senior year, Shay and her friend Laurel were the only ones who managed to escape. Now, eight years later, Shay’s built a new life in a tony Texas suburb. But when she hears the horrifying news of Laurel’s death―delivered, of all ways, by her favorite true-crime podcast crusader―she begins to suspect that the past she thought she buried is still very much alive.

Marin had the perfect life. Married to her college sweetheart, she owns a chain of upscale hair salons, and Derek runs his own company. They're admired in their community and are a loving family—until their world falls apart the day their son, Sebastian, is taken. A year later, Marin is a shadow of herself. The FBI search has gone cold. The publicity has faded. She and her husband rarely speak. She hires a PI to pick up where the police left off, but instead of finding Sebastian, she learns that Derek is having an affair with a younger woman.

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.

A golden summer, and six talented teenagers are looking forward to the brightest of futures—until a daredevil game goes horribly wrong, leaving three strangers dead. 18-year-old Megan takes the blame for the crime, leaving her friends to get on with their lives. In return, they each agree to a 'favour', payable on her release from prison. Twenty years later Megan is free. It is payback time. And her friends start disappearing, one by one . . .

Sisters. Soul mates. Strangers. Molly Raven lives a quiet, structured life in London, finding comfort in security and routine. Her identical twin, Katie, living in New York, is the exact opposite: outgoing, spontaneous, and adventurous. But when Molly hears that Katie has died, possibly murdered, she is thrown into unfamiliar territory. As terrifying as it is, she knows she must travel across the ocean and find out what happened. But as she tracks her twin’s final movements, cracks begin to emerge.

The old Victorian pier was a thing of beauty until it was allowed to decay. It was where the youth of Oldcliffe-on-Sea would go to hang out. It's also where 21-year-old Sophie Collier disappeared 18 years ago. Francesca Howe, known as Frankie, was Sophie's best friend, and even now she is haunted by the mystery of what happened to her. When Frankie gets a call from Sophie's brother, Daniel, informing her that human remains have been found washed up nearby, she immediately wonders if it could be Sophie.

On the day she was abducted, Annie O’Sullivan, a 32-year-old Realtor, had three goals: sell a house, forget about a recent argument with her mother, and be on time for dinner with her ever-patient boyfriend. The open house is slow, but when her last visitor pulls up in a van as she’s about to leave, Annie thinks it just might be her lucky day after all.