Stella and Ellie Steckler are only a year apart, but their different personalities make their relationship complicated. Stella is single-minded, driven, and she keeps to herself. Cross-country running is her life and she won't let anything get in the way of being the best. Her sister Ellie is a talented runner too, but she also lets herself have fun. She has friends. She goes to parties. She has a life off the course.

Camp Alpine Lake is the only place where Goldie Easton feels safe. She’s always had a special connection to the place, even before she was old enough to attend. The camp is the lifeline of Roxwood, the small town she lives in. Alpine Lake provides jobs, money and prestige to the region. Few Roxwood locals, though, get to reap the rewards of living so close to the glam summer that camp, with its five-figure tuition and rich kids who have been dumped there for eight weeks by their powerful parents. Goldie's one of them. 

Kay Donovan has skeletons in her closet, but who doesn't? The past is the past, and now Kay's a star soccer player whose group of gorgeous, pedigreed friends run their private school with effortless popularity and acerbic wit. But when a girl's body is found in the lake, Kay's carefully constructed life begins to topple. The dead girl has left a memento, a computer-coded scavenger hunt, which, as it unravels, begins to implicate each of Kay's friends, until Kay herself is in the crosshairs of the murder investigation.

On an island off the coast of Ireland, guests gather to celebrate two people joining their lives together as one. The groom: handsome and charming, a rising television star. The bride: smart and ambitious, a magazine publisher. It’s a wedding for a magazine or for a celebrity: the designer dress, the remote location, the luxe party favors, the boutique whiskey. The cell phone service may be spotty and the waves may be rough, but every detail has been expertly planned and will be expertly executed.

Everyone knows the Ivies: the most coveted universities in the United States. Far more important are the Ivies. The Ivies at Claflin Academy, that is. Five girls with the same mission: to get into the Ivy League by any means necessary. I would know. I'm one of them. We disrupt class ranks, club leaderships, and academic competitions...among other things. We improve our own odds by decreasing the fortunes of others. Because hyper-elite competitive college admissions is serious business. And in some cases, it's deadly. 

Kacey is the new girl in Broken Falls. When she moved in with her father, she stepped into a brand-new life. A life with a stepbrother, a stepmother, and, strangest of all, an adoring younger half sister. Kacey's new life is eerily charming compared with the wild highs and lows of the old one she lived with her volatile mother. And everyone is so nice in Broken Falls - she's even been welcomed into a tight new circle of friends. Bailey and Jade invite her to do everything with them.

Echo Ridge is small-town America. Ellery's never been there, but she's heard all about it. Her aunt went missing there at age 17. And only five years ago, a homecoming queen put the town on the map when she was killed. Now, Ellery has to move there to live with a grandmother she barely knows. The town is picture-perfect, but it's hiding secrets. And before school even begins for Ellery, someone has declared open season on homecoming, promising to make it as dangerous as it was five years ago. Then, almost as if to prove it, another girl goes missing.

Milly, Aubrey, and Jonah Story are cousins, but they barely know each another, and they've never even met their grandmother. Rich and reclusive, she disinherited their parents before they were born. So when they each receive a letter inviting them to work at her island resort for the summer, they're surprised...and curious.

Ivy, Mateo, and Cal used to be close. Now all they have in common is Carlton High and the beginning of a very bad day. So when the three unexpectedly run into each other, they decide to avoid their problems by ditching. Just the three of them, like old times. Except they’ve barely left the parking lot before they run out of things to say...until they spot another Carlton High student skipping school - and follow him to the scene of his own murder. In one chance move, their day turns from dull to deadly. And it’s about to get worse.

A ton of copycat gossip apps have popped up since Simon died, but in the year since the Bayview four were cleared of his shocking death, no one's been able to fill the gossip void quite like he could. The problem is no one has the facts. Until now. This time it's not an app, though - it's a game. Truth or Dare. Phoebe's the first target. If you choose not to play, it's a truth. And hers is dark. Then comes Maeve, and she should know better - always choose the dare. But by the time Knox is about to be tagged, things have gotten dangerous.

You heard the story on the news. A girl and a boy went into the woods. The girl carried a picnic basket. The boy wore bright yellow running shoes. The girl found her way out, but the boy never did.... Everyone thinks they know what happened. Some say Tabby pushed him off that cliff - she didn't even like hiking. She was jealous. She had more than her share of demons. Others think he fell accidentally - she loved Mark. She would never hurt him...even if he hurt her.

The troublemaker. The overachiever. The cheer captain. The dead girl. Like every high school in America, Jefferson-Lorne High contains all of the above. After the shocking murder of senior Emma Baines, three of her classmates are at the top of the suspect list: Claude, the notorious partier; Avery, the head cheerleader; and Gwen, the would-be valedictorian. But appearances are never what they seem. And the truth behind what really happened to Emma may just be lying in plain sight. As long buried secrets come to light, the clock is ticking to find Emma's killer.

Pip is about to head to college, but she is still haunted by the way her last investigation ended. She’s used to online death threats in the wake of her viral true-crime podcast, but she can’t help noticing an anonymous person who keeps asking her: Who will look for you when you’re the one who disappears? 

What do the queen bee, star athlete, valedictorian, stoner, loner, and music geek all have in common? They were all invited to a scholarship dinner, only to discover it’s a trap. Someone has locked them into a room with a bomb, a syringe filled with poison, and a note saying they have an hour to pick someone to kill...or else everyone dies.

There are ghosts around every corner in Fayette, Pennsylvania. Tessa left when she was nine and has been trying ever since not to think about it after what happened there that last summer. Memories of things so dark will burn themselves into your mind if you let them. Callie never left. She moved to another house, so she doesn't have to walk those same halls, but then Callie always was the stronger one.