It’s been five years since Summer Marks was murdered in the woods. Everyone thinks Mia and Brynn killed their best friend. That driven by their obsession with a novel called The Way into Lovelorn the three girls had imagined themselves into the magical world where their fantasies became twisted, even deadly. The only thing is: They didn’t do it. On the anniversary of Summer’s death, a seemingly insignificant discovery resurrects the mystery and pulls Mia and Brynn back together again, and the girls must confront what really happened in the woods all those years ago.

Heather never thought she would compete in panic, a legendary game played by graduating seniors, where the stakes are high and the payoff is even higher. She'd never thought of herself as fearless, the kind of person who would fight to stand out. But when she finds something, and someone, to fight for, she will discover that she is braver than she ever thought. Dodge has never been afraid of panic. His secret will fuel him, and get him all the way through the game; he's sure of it. But what he doesn't know is that he's not the only one with a secret....

Samantha Kingston has it all: the world's most crush-worthy boyfriend, three amazing best friends, and first pick of everything at Thomas Jefferson High—from the best table in the cafeteria to the choicest parking spot. Friday, February 12, should be just another day in her charmed life. Instead, it turns out to be her last. Then she gets a second chance. Seven chances, in fact.

"Ninety-five days, and then I'll be safe. I wonder whether the procedure will hurt. I want to get it over with. It's hard to be patient. It's hard not to be afraid while I'm still uncured, though so far the deliria hasn't touched me yet. Still, I worry. They say that in the old days, love drove people to madness. The deadliest of all deadly things: It kills you both when you have it and when you don't."

Lyra's story begins in the Haven Institute, a building tucked away on a private island off the coast of Florida that from a distance looks serene and even beautiful. But up close, the locked doors, military guards, and biohazard suits tell a different story. In truth Haven is a clandestine research facility where thousands of replicas, or human models, are born, raised, and observed. When a surprise attack is launched on Haven, two of its young experimental subjects - Lyra, or 24, and the boy known only as 72 - manage to escape.

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. 

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.

Ten years ago, six friends went on vacation. One made it out alive... In that instant, college student Quincy Carpenter became a member of a very exclusive club - a group of survivors the press dubbed “The Final Girls”: Lisa, who lost nine sorority sisters to a college dropout's knife; Sam, who endured the Sack Man during her shift at the Nightlight Inn; and now Quincy, who ran bleeding through the woods to escape the massacre at Pine Cottage. Despite the media's attempts, the three girls have never met.

Alex Craft knows how to kill someone. And she doesn't feel bad about it. Three years ago, when her older sister, Anna, was murdered and the killer walked free, Alex uncaged the language she knows best - the language of violence. While her own crime goes unpunished, Alex knows she can't be trusted among other people. Not with Jack, who wants to really know her but still feels guilty over the role he played the night Anna's body was discovered. And not with Peekay, the kid with a defiant streak who befriends Alex while they volunteer at an animal shelter. Not anyone.

Born to a prominent Chicago judge and his stifled socialite wife, Mia Dennett moves against the grain as a young inner-city art teacher. One night, Mia enters a bar to meet her on-again, off-again boyfriend. But when he doesn't show, she unwisely leaves with an enigmatic stranger. With his smooth moves and modest wit, Colin Thatcher seems at first like a safe one-night stand. But following Colin home will turn out to be the worst mistake of Mia's life.

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.

In the Society, Officials decide. Who you love. Where you work. When you die. Cassia has always trusted the Society’s choices. And when her best friend appears on the Matching screen, she is certain he’s the one - until she sees another face flash for an instant before the screen fades to black. Now she is faced with impossible choices: Between Xander and Ky, between the only life she’s ever known and a path no has dared to follow...between perfection and the truth.

Thirteen-year-old Julie Whitaker was kidnapped from her bedroom in the middle of the night, witnessed only by her younger sister. Her family was shattered, but managed to stick together, hoping against hope that Julie is still alive. And then one night: the doorbell rings. A young woman who appears to be Julie is finally, miraculously, home safe. The family is ecstatic - but Anna, Julie's mother, has whispers of doubts. She hates to face them.

In Gold Coast, Long Island, everything from the expensive downtown shops to the manicured beaches, to the pressed uniforms of Jill Newman and her friends, looks perfect. But as Jill found out three years ago, nothing is as it seems. Freshman year Jill's best friend, the brilliant, dazzling Shaila Arnold, was killed by her boyfriend. After that dark night on the beach, Graham confessed, the case was closed, and Jill tried to move on.

Charlotte lost her mother six months ago, and still no one will tell her exactly what happened the day she mysteriously died. They say her heart stopped, but Charlotte knows deep down that there's more to the story. The only person who gets it is Charlotte's sister, Maddi. Maddi agrees - people’s hearts don’t just stop. There are too many questions left unanswered for the girls to move on.