Zee went missing for a year. And when he came back, he was...different. Nobody knows what happened to him. At Zee's welcome home party, Justin and the neighborhood crew play Hide and Seek. But it goes wrong. Very wrong. One by one, everyone who plays the game disappears, pulled into a world of nightmares come to life. Justin and his friends realize this horrible place is where Zee had been trapped. All they can do now is hide from the Seeker.

Tessa Woodward isn't exactly thrilled to move to rainy, cold Chicago from her home in sunny Florida. But homesickness turns to icy fear when unexplainable things start happening in her new house. Things like flickering lights, mysterious drawings appearing out of nowhere, and a crackling noise she can feel in her bones. When her little brother's doll starts crying real tears, Tessa realizes that someone - or something - is trying to communicate with her. And it involves a secret that's been shrouded in mystery for more than 100 years.

Twelve-year-old Hazel Woods has always had an unusual knack for sleuthing. Some may call it snooping, but all she really wants is to solve mysteries around town. So, when she not-so-accidentally overhears her brother Den planning to sneak into the cemetery at night for an epic game of hide-and-seek, she decides to secretly tag along. This seems like the perfect opportunity to investigate the claims that the cemetery is haunted.

Mallory hasn't quite adapted to life in her new town of Eastport yet. Maybe it's because everyone is obsessed with keeping the town's reputation as the most cursed town in the US. And thanks to the nightmares she's had since arriving, Mallory hardly sleeps. Combined with the unsettling sensation of being watched, she's quickly becoming convinced there's more to her town. Something darker.

Claire has absolutely no interest in the paranormal. She's a scientist, which is why she can't think of anything worse than having to help out her dad on one of his ghost-themed Chicago bus tours. She thinks she's made it through when she sees a boy with a sad face and dark eyes at the back of the bus. There's something off about his presence, especially because when she checks at the end of the tour...he's gone.

Link, Michael, and Dana live in a quiet town. But it's woken up very quickly when someone sneaks into school and vandalizes it with a swastika. Nobody can believe it. How could such a symbol of hate end up in the middle of their school? Who would do such a thing? Because Michael was the first person to see it, he's the first suspect. Because Link is one of the most popular guys in school, everyone's looking to him to figure it out. And because Dana's the only Jewish girl in the whole town, everyone's treating her more like an outsider than ever.

Twelve-year-old Jolene spends every day she can at the library watching her favorite livestream: The Desert Aviator, where twelve-year-old "Addie Earhart" shares her adventures flying an ultralight plane over the desert. While watching this daring girl fly through the sky, Jolene can dream of what it would be like to fly with her, far away from her own troubled home life where her mother struggles with a narcotic addiction. And Addie, who is grieving the loss of her father, finds solace in her online conversations with Jolene, her biggest - and only - fan.

Bell has spent his whole life—all eleven years of it—on Mars. But he's still just a regular kid—he loves cats and any kind of cake, and is curious about the secrets the adults in the US colony are keeping. Like, why don't they have contact with anyone on the other Mars colonies? Why are they so isolated? When a virus breaks out and the grown-ups all fall ill, Bell and the other children are the only ones who can help. It's up to Bell—a regular kid in a very different world—to uncover the truth and save his family...and possibly unite an entire planet.

Charity Curtis has the summer job of her dreams, playing the “final girl” at Camp Mirror Lake. Guests pay to be scared in this full-contact terror game, as Charity and her summer crew recreate scenes from a classic slasher film, Curse of Camp Mirror Lake. The more realistic the fear, the better for business. But the last weekend of the season, Charity’s co-workers begin disappearing. And when one ends up dead, Charity’s role as the final girl suddenly becomes all too real. If Charity and her girlfriend Bezi hope to survive the night, they’ll need figure out what this killer is after.

Amari Peters has never stopped believing her missing brother, Quinton, is alive. Not even when the police told her otherwise, or when she got in trouble for standing up to bullies who said he was gone for good. So when she finds a ticking briefcase in his closet, containing a nomination for a summer tryout at the Bureau of Supernatural Affairs, she’s certain the secretive organization holds the key to locating Quinton - if only she can wrap her head around the idea of magicians, fairies, aliens, and other supernatural creatures all being real.

Ever since Ellie wore a whale swimsuit and made a big splash at her fifth-birthday party, she's been bullied about her weight. To cope, she tries to live by the Fat Girl Rules - like "no making waves", "avoid eating in public", and "don't move so fast that your body jiggles". And she's found her safe space - her swimming pool - where she feels weightless in a fat-obsessed world. In the water, she can stretch herself out like a starfish and take up all the room she wants. It's also where she can get away from her mom, who thinks criticizing Ellie's weight will motivate her to diet.

Decades after the Vietnam War and Toby’s life-changing summer with Zachary Beaver, Toby’s daughter, Rylee, is at a crossroads - her best friend, Twig, has started pushing her away just as Ben, a new kid from New York, settles into their small town of Antler. Rylee befriends Ben and learns that Ben’s father was a first responder on 9/11. The two unlikely friends soon embark on a project to find Zachary Beaver and hopefully reconnect him with Rylee's father almost 30 years later.

Daniel Redmayne is fast asleep on the first night of a white water rafting trip when he's awoken by screams. The dam has failed. The river is surging, and their camp will be under water in a matter of moments. As the shrieking roar of the river rushes closer, the kids scramble to higher ground. They make it; their counselors do not. Now they're on their own, with barely any food or supplies, in the middle of the Montana wilderness. Do Daniel and his four classmates have what it takes to stay alive until they can get rescued?

Ten-year-old Anthony Joplin has made it to double digits! Which means he's finally old enough to play in the spades tournament every Joplin Man before him seems to have won. So while Ant's friends are stressing about fifth grade homework and girls, Ant only has one thing on his mind: how he'll measure up to his father's expectations at the card table. Then Ant's best friend gets grounded, and he's forced to find another spades partner. And Shirley, the new girl in his class, isn't exactly what he has in mind.

Ophelia Harrison used to live in a small house in the Georgia countryside. But that was before the night in November 1922, and the cruel act that took her home and her father from her. Which was the same night that Ophie learned she can see ghosts. Now Ophie and her mother are living in Pittsburgh with relatives they barely know. In the hopes of earning enough money to get their own place, Mama has gotten Ophie a job as a maid in the same old manor house where she works.

When Abbey’s best friend, Kristen, vanishes at the bridge near Sleepy Hollow Cemetery, everyone else is all too quick to accept that Kristen is dead, and rumors fly that her death was no accident. Abbey goes through the motions of mourning her best friend, but privately, she refuses to believe that Kristen is really gone. Then she meets Caspian, the gorgeous and mysterious boy who shows up out of nowhere at Kristen’s funeral, and who keeps reappearing in Abbey’s life. Caspian clearly has secrets of his own, but he’s the only person who makes Abbey feel normal again.

When Alexis's little sister Kasey becomes obsessed with an antique doll, Alexis thinks she is just being her usual weird self. Things get weirder, though, when their house starts changing. Doors open and close by themselves; water boils on the unlit stove; and an unplugged air conditioner blasts cold air.

Seventeen-year-old Abby Turner's summer isn't going the way she'd planned. She has a not-so-secret but definitely unrequited crush on her best friend, Cooper. She hasn't been able to manage her mother's growing issues with anxiety. And now she's been rejected from an art show because her work "has no heart". So when she gets another opportunity to show her paintings, Abby isn't going to take any chances. Which is where the list comes in. Abby gives herself one month to do 10 things, ranging from face a fear (three) to learn a stranger's story (five) to fall in love (eight).

Sixteen-year-old Sayers Wayte has everything. Popularity, good looks, perfect grades—there's nothing Sayers' family money can't buy. Until he's kidnapped by a man who tells him the privileged life he's been living is based on a lie. Trapped in a windowless room, without knowing why he's been taken or how long the man plans to keep him shut away, Sayers faces a terrifying new reality. To survive, he must forget the world he once knew, and play the part his abductor has created for him.

Dear Diary...Bess, George, and I are actually in Alaska! Everywhere you look, there are massive mountains and sparkling, deep-blue waters. We're on the maiden voyage of the Arctic Star luxury cruise ship, and my old friend, Becca Wright, the assistant cruise director, needs our help. She received threatening emails before even setting sail; then a bloody body turned up in the swimming pool.

When you're the third of six kids, it's easy to get lost in the shuffle, but Sunday Fowler is determined that this summer she'll find the one thing that makes her stand out from her siblings. And when she discovers a silver box in the basement of the library her parents are renovating, she might just have found something to gain her the attention she so craves. Inside is a series of letters addressed to "The Librarian" and a manuscript. But who wrote them?

When her boyfriend dies a most untimely death, Aura--who can see ghosts--is forced to reconsider her relationship with the living and dead in Shade.

What if finding her means losing himself? Seventeen-year-old Bo has always had delusions that he could travel through time. When he was 10, Bo claimed to have witnessed the Titanic hit an iceberg, and at 15, he found himself on a Civil War battlefield, horrified by the bodies surrounding him. So when his concerned parents send him to a school for troubled youth, Bo assumes he knows the truth: that he's actually attending Berkshire Academy, a school for kids who, like Bo, have "superpowers".

Last spring, Nikki Beckett vanished, sucked into an underworld known as the Everneath. Now she’s returned - to her old life, her family, her boyfriend - before she’s banished back to the underworld... this time forever. She has six months before the Everneath comes to claim her, six months for good-byes she can’t find the words for, six months to find redemption, if it exists. Nikki longs to spend these precious months forgetting the Everneath and trying to reconnect with her boyfriend, Jack, the person most devastated by her disappearance - and the one person she loves more than anything.

Ricky Desmond has been through this all before. If he could just get through to his mother, he could convince her that he doesn't belong at Brookline. From the man who thinks he can fly to the woman who killed her husband, the other patients are nothing like him; all he did was lose his temper just a little bit, just the once. But when Ricky is selected by the sinister Warden Crawford for a very special program - a program that the warden claims will not cure him but perfect him - Ricky realizes that he may not be able to wait for his mom a second longer.

Sixteen-year-old physics nerd Aysel is obsessed with plotting her own death. With a mother who can barely look at her without wincing, classmates who whisper behind her back, and a father whose violent crime rocked her small town, Aysel is ready to turn her potential energy into nothingness.

Eli and his family have lived in the Compound for six years. The world they knew is gone. Eli's father built the Compound to keep them safe. Now, they can't get out. He won't let them.

As soon as Seneca Frazier sees the post on the Case Not Closed website about Helena Kelly, she's hooked. Helena's high-profile disappearance five years earlier is the one that originally got Seneca addicted to true crime. It's the reason she's a member of the site in the first place. So when Maddy Wright, her best friend from the CNC site, invites Seneca to spend spring break in Connecticut looking into the cold case, she immediately packs her bag.

Eleven minutes passed before Delaney Maxwell was pulled from the icy waters of a Maine lake by her best friend, Decker Phillips. By then her heart had stopped beating. Her brain had stopped working. She was dead. And yet she somehow defied medical precedent to come back seemingly fine - despite the scans that showed significant brain damage. Everyone wants Delaney to be all right, but she knows she's far from normal. Pulled by strange sensations she can't control or explain, Delaney finds herself drawn to the dying. Is her altered brain now predicting death, or causing it?

Mallory killed her boyfriend, Brian. She can't remember the details of that night but everyone knows it was self-defense, so she isn't charged. But Mallory still feels Brian's presence in her life. Is it all in her head? Or is it something more? In desperate need of a fresh start, Mallory is sent to Monroe, a fancy prep school where no one knows her . . . or anything about her past.But the feeling follows her, as do her secrets. Then, one of her new classmates turns up dead.

Claire has absolutely no interest in the paranormal. She's a scientist, which is why she can't think of anything worse than having to help out her dad on one of his ghost-themed Chicago bus tours. She thinks she's made it through when she sees a boy with a sad face and dark eyes at the back of the bus. There's something off about his presence, especially because when she checks at the end of the tour...he's gone.

Tessa Woodward isn't exactly thrilled to move to rainy, cold Chicago from her home in sunny Florida. But homesickness turns to icy fear when unexplainable things start happening in her new house. Things like flickering lights, mysterious drawings appearing out of nowhere, and a crackling noise she can feel in her bones. When her little brother's doll starts crying real tears, Tessa realizes that someone - or something - is trying to communicate with her. And it involves a secret that's been shrouded in mystery for more than 100 years.

Mallory hasn't quite adapted to life in her new town of Eastport yet. Maybe it's because everyone is obsessed with keeping the town's reputation as the most cursed town in the US. And thanks to the nightmares she's had since arriving, Mallory hardly sleeps. Combined with the unsettling sensation of being watched, she's quickly becoming convinced there's more to her town. Something darker.

Twelve-year-old Hazel Woods has always had an unusual knack for sleuthing. Some may call it snooping, but all she really wants is to solve mysteries around town. So, when she not-so-accidentally overhears her brother Den planning to sneak into the cemetery at night for an epic game of hide-and-seek, she decides to secretly tag along. This seems like the perfect opportunity to investigate the claims that the cemetery is haunted.

Twelve-year-old Sarah Greene wants nothing more from her seventh-grade year than to beat the hardest escape room left in her town with her best friends, West, and Hannah. But when a foreclosure notice shows up on Sarah's front door, everything changes. Since her father became ill two years ago, things have been bad, but not lose your house bad . . . until now.

Thirteen-year-old Matthew is miserable. His journalist dad is stuck overseas indefinitely, and his mom has moved in his one-hundred-year-old great-grandmother to ride out the pandemic, adding to his stress and isolation. But when Matthew finds a tattered black-and-white photo in his great-grandmother’s belongings, he discovers a clue to a hidden chapter of her past, one that will lead to a life-shattering family secret.

After suffering a tragic loss, 11-year-old Ollie only finds solace in books. So when she happens upon a crazed woman at the river threatening to throw a book into the water, Ollie doesn't think—she just acts, stealing the book and running away. As she begins to read the slender volume, Ollie discovers a chilling story about a girl named Beth, the two brothers who both loved her, and a peculiar deal made with "the smiling man", a sinister specter who grants your most tightly held wish, but only for the ultimate price.

Berkeley and her best friend, Garth, live on an old cruise ship, scavenging for supplies from the drowned cities left behind on the ocean floor after the sea swallowed up all the land. They think they’ve seen every kind of aquatic creature, but they never expected to find sea monsters.... After awakening a Hydra, Berkeley and Garth are sent to live on a submarine, where they study and hunt sea monsters. But the Hydra wants revenge on their home ship - and if it succeeds, their families will go down with it.

On the morning of Henry Ludd's thirteenth birthday, the power goes out. No phones, no news, and planes are literally falling out of the sky. Henry's father was away from the family farm and he has not returned. It's worrisome as people descend into lawlessness. Four months later, the electricity still hasn't come back. While Henry's family is protected in their walled compound with wind turbines fueling their electricity, the rest of their area has suffered. Henry's father still hasn’t been found.

Twelve-year-old Jolene spends every day she can at the library watching her favorite livestream: The Desert Aviator, where twelve-year-old "Addie Earhart" shares her adventures flying an ultralight plane over the desert. While watching this daring girl fly through the sky, Jolene can dream of what it would be like to fly with her, far away from her own troubled home life where her mother struggles with a narcotic addiction. And Addie, who is grieving the loss of her father, finds solace in her online conversations with Jolene, her biggest - and only - fan.

Simon O'Keeffe's biggest claim to fame should be the time his dad accidentally gave a squirrel a holy sacrament. Or maybe the alpaca disaster that went viral on YouTube. But the story the whole world wants to tell about Simon is the one he'd do anything to forget: the story in which he's the only kid in his class who survived a school shooting. Two years after the infamous event, twelve-year-old Simon and his family move to the National Quiet Zone—the only place in America where the internet is banned.