When mysterious, single dad Ray Jenkins moves in to the neighborhood, Sonia is suspicious from the outset that something is amiss. Ray’s young son, Henry - traumatized from the recent loss of his mother - acts like he barely knows his father. But things take a turn for the worse when Ray is involved in a multi-vehicle wreck and suffers a brain injury and subsequent memory loss. Sonia steps in to care for Henry, but soon becomes alarmed at the disturbing things he tells her. Determined to get to the bottom of who her neighbor really is, she snoops around in his house.

When PI Heather Nelson makes a last-minute decision to attend her class reunion, she and her once tight-knit group of friends are surprised at dinner by an elaborate forget-me-not floral arrangement. But the accompanying card contains an ominous message: "You deserve to die". When several of the group come close to death in the following weeks, they begin to suspect that the sender of the message has deadly intentions. Fearing for their lives, they beg Heather to return to Iowa and track down the person. But her friends only think they know her.

What happens on the water, stays on the water. Or so they thought. Allison and her handsome, charismatic husband, Doug, are on a Caribbean cruise to celebrate their 10th wedding anniversary. But the steady stream of idyllic photos and happy hashtags they post online is hiding a dangerous rift in their relationship. Allison has long suspected that Doug is having an affair. Despite his impassioned denials and smooth-talking alibis, she’s unconvinced of his innocence and determined to dig for the truth, no matter the cost. And she’s not the only one delving into their secrets.

Trust no one when your daughter goes missing. On a frigid winter morning near her cabin, Ava Galbraith’s four-year-old daughter vanishes without a trace in the snow. Local sheriff, Mallory Anderson, focuses his initial investigation on Ava and her estranged husband, Gordon, embroiled in a bitter custody battle. But when Ava receives a ransom demand for half-a-million dollars, the race to find four-year-old Melanie takes on a more ominous tone. With the FBI on board, disturbing secrets begin to emerge connecting both Ava and her husband to a murky past.

After Matt returns from a harrowing deployment in Afghanistan, he and his wife Blair take off around the States in his father’s camping trailer for what they hope will be a tranquil trip. When torrential rain derails their plans, they, along with a handful of other travelers, seek shelter at a remote campground. Things soon take a disturbing turn when they stumble upon a body. And then, the unthinkable happens.

In the four years since her husband’s death, Melanie LaSalle’s life has been consumed with managing the family design firm and caring for her five-year-old daughter, Jerica. The possibility of a new relationship is the last thing on her mind. But when Melanie meets Joel Ellington, a new staff member at her church, she is instantly attracted to his warm spirit. As their friendship deepens, however, Melanie is troubled by something she can’t quite understand or explain.

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.

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.

When Maggie sees the beautiful Venetian blinds moving in the Caldwells' front window, she freezes. Her favorite neighbors Cady and Josh are away, so who is in their house? The pretty young woman who answers the door tells a convincing story. She's Sarah. The house-sitter. Just here for a month. An old friend of Cady's who needed a place to stay. She's pleasant and warm, and Maggie wanders back to her house thinking she might have made a new friend. Yet she can't help but wonder why Cady never mentioned Sarah.

A night spent sleeping on dirt and leaves is not how Claire Matchett expected to spend her vacation. She thought this would be a break. A week of hiking and hot tubs with two other couple friends. Then Claire’s minivan breaks down on a lonely dirt road. With no cell reception, the group has no choice but to hike the rest of the way to their hotel. But it turns out the woods aren’t as easy to navigate as they thought. Hours later, they are lost. Hopelessly lost. And as they navigate deeper into the woods, the members of their party are struck down mysteriously one by one.

Alicia Berenson’s life is seemingly perfect. A famous painter married to an in-demand fashion photographer, she lives in a grand house with big windows overlooking a park in one of London’s most desirable areas. One evening, her husband, Gabriel, returns home late from a fashion shoot, and Alicia shoots him five times in the face and then never speaks another word. Alicia’s refusal to talk, or give any kind of explanation, turns a domestic tragedy into something far grander, a mystery that captures the public imagination and casts Alicia into notoriety.

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....

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.

Everyone from Wakarusa, Indiana, remembers the infamous case of January Jacobs, who was discovered in a ditch hours after her family awoke to find her gone. Margot Davies was six at the time, the same age as January—and they were next-door neighbors. In the twenty years since, Margot has grown up, moved away, and become a big-city journalist. But she’s always been haunted by the feeling that it could’ve been her. And the worst part is, January’s killer has never been brought to justice.

It’s been a decade since Trumanell Branson disappeared, leaving only a bloody handprint behind. Her pretty face still hangs like a watchful queen on the posters on the walls of the town’s Baptist church, the police station, and in the high school. They all promise the same thing: We will find you. Meanwhile, Tru's brother, Wyatt, lives as a pariah in the desolation of the old family house, cleared of wrongdoing by the police but tried and sentenced in the court of public opinion and in a new documentary about the crime.