Cat lives in her high school. She never leaves, and for a long time her school has provided her with everything she needs. But now things are changing. The hallways contract and expand along with the school’s breathing, and the showers in the bathroom run a bloody red. Cat’s best friend is slowly turning into cardboard, and instead of a face, Cat has a cat mask made of her own hardened flesh.

Eighteen-year-old Eliza Mirk is the anonymous creator of the wildly popular webcomic Monstrous Sea, but when a new boy at school tempts her to live a life offline, everything she’s worked for begins to crumble. In the real world, Eliza Mirk is shy, weird, and friendless. Online, Eliza is LadyConstellation, anonymous creator of a popular webcomic called Monstrous Sea. With millions of followers and fans throughout the world, Eliza’s persona is popular. Eliza can’t imagine enjoying the real world as much as she loves her digital community.

Charlotte Davis is in pieces. At 17 she's already lost more than most people do in a lifetime. But she's learned how to forget. The broken glass washes away the sorrow until there is nothing but calm. You don't have to think about your father and the river. Your best friend, who is gone forever. Or your mother, who has nothing left to give you. Every new scar hardens Charlie's heart just a little more, yet it still hurts so much. It hurts enough to not care anymore, which is sometimes what has to happen before you can find your way back from the edge.

Biz knows how to float. She has her people, her posse, her mom, and the twins. She has Grace. And she has her dad, who tells her about the little kid she was, and who shouldn't be here but is. So Biz doesn't tell anyone anything. Not about her dark, runaway thoughts, not about kissing Grace or noticing Jasper, the new boy. And she doesn't tell anyone about her dad. Because her dad died when she was seven. And Biz knows how to float, right there on the surface - normal, okay, regular, fine.

Ambitious New York City teenager Craig Gilner is determined to succeed at life-which means getting into the right high school to get into the right college to get the right job. But once Craig aces his way into Manhattan's Executive Pre-Professional High School, the pressure becomes unbearable. He stops eating and sleeping until, one night, he nearly kills himself.

Moving, harrowing, and ultimately uplifting, Lori Schiller's memoir is a classic testimony to the ravages of mental illness and the power of perseverance and courage. At 17, Lori Schiller was the perfect child - the only daughter of an affluent, close-knit family. Six years later she made her first suicide attempt, then wandered the streets of New York City dressed in ragged clothes, tormenting voices crying out in her mind. Lori Schiller had entered the horrifying world of full-blown schizophrenia.

Eden was always good at being good. Starting high school didn’t change who she was. But the night her brother’s best friend rapes her, Eden’s world capsizes. What was once simple, is now complex. What Eden once loved—who she once loved—she now hates. What she thought she knew to be true, is now lies. Nothing makes sense anymore, and she knows she’s supposed to tell someone what happened but she can’t. So she buries it instead. And she buries the way she used to be.

Hannah knows there's been a mistake. She doesn't need to be institutionalized. What happened to her roommate at that summer program was an accident. As soon as the doctor and judge figure out that she isn't a danger to herself or others, she can go home to start her senior year. Then Lucy arrives. Lucy has her own baggage, and she's the perfect project to keep Hannah's focus off all she is missing at home. But Lucy may be the one person who can get Hannah to confront the secrets she's avoiding - and the dangerous games that landed her in confinement in the first place.

Harry Potter has never even heard of Hogwarts when the letters start dropping on the doormat at number four, Privet Drive. Addressed in green ink on yellowish parchment with a purple seal, they are swiftly confiscated by his grisly aunt and uncle. Then, on Harry's eleventh birthday, a great beetle-eyed giant of a man called Rubeus Hagrid bursts in with some astonishing news: Harry Potter is a wizard, and he has a place at Hogwarts School of Witchcraft and Wizardry. An incredible adventure is about to begin!

Adam is a pretty regular teen, except he's navigating high school life while living with paranoid schizophrenia. His hallucinations include a cast of characters that range from the good (beautiful Rebecca) to the bad (angry Mob Boss) to the just plain weird (polite naked guy). An experimental drug promises to help him hide his illness from the world. When Adam meets Maya, a fiercely intelligent girl, he desperately wants to be the normal, great guy that she thinks he is. But as the miracle drug begins to fail, how long can he keep this secret from the girl of his dreams?

For all of Emory's life she's been told who she is. In town she's the rich one—the great-great-granddaughter of the mill's founder. At school she's hot Maddie Ward's younger sister. And at home, she's the good one, her stoner older brother Joey's babysitter. Everything was turned on its head, though, when she and Joey were in the car accident that killed Candy MontClaire. The car accident that revealed just how bad Joey's drug habit was.

Samantha McAllister looks just like the rest of the popular girls in her junior class. But hidden beneath the straightened hair and expertly applied makeup is a secret that her friends would never understand: Sam has purely obsessional OCD and is consumed by a stream of dark thoughts and worries that she can't turn off. Second-guessing every move, thought, and word makes daily life a struggle, and it doesn't help that her lifelong friends will turn toxic at the first sign of a wrong outfit, wrong lunch, or wrong crush.

In Beatrice Prior's dystopian Chicago, society is divided into five factions, each dedicated to the cultivation of a particular virtue - Candor (the honest), Abnegation (the selfless), Dauntless (the brave), Amity (the peaceful), and Erudite (the intelligent). On an appointed day of every year, all sixteen-year-olds must select the faction to which they will devote the rest of their lives. For Beatrice, the decision is between staying with her family and being who she really is - she can't have both. So she makes a choice that surprises everyone, including herself.

Pay close attention, and you might solve this. On Monday afternoon five students at Bayview High walk into detention. Bronwyn, the brain, is Yale-bound and never breaks a rule. Addy, the beauty, is the picture-perfect homecoming princess. Nate, the criminal, is already on probation for dealing. Cooper, the athlete, is the all-star baseball pitcher. And Simon, the outcast, is the creator of Bayview High's notorious gossip app. Only Simon never makes it out of that classroom. Before the end of detention, Simon's dead.

John Forbes Nash, Jr., a prodigy and legend by the age of 30, dazzled the mathematical world by solving a series of deep problems deemed "impossible" by other mathematicians. But at the height of his fame, Nash suffered a catastrophic mental breakdown and began a harrowing descent into insanity, resigning his post at MIT, slipping into a series of bizarre delusions, and eventually becoming a dreamy, ghostlike figure at Princeton, scrawling numerological messages on blackboards.