Nineteen-year-old Avery Delacorte loves the water. Growing up in Brookline, Massachusetts, she took swim lessons at her community pool and captained the local team; in high school, she raced across bays and sprawling North American lakes. Now a sophomore on her university's nationally ranked team, she struggles under the weight of new expectations, but life is otherwise pretty good. Perfect, really.

June O'Donnell - aka Junior, aka Jack, aka Jonathan O'Donnell IV, aka the first female O'Donnell firstborn - has always been haunted by her family's mythic but complicated legacy. As she prepares to begin her final year of high school, June is itching to leave behind her ghosts in Five Fingers, Michigan, and travel the world. And then, just like it always happens to the O'Donnells, a painful glimmer from her past returns to mess everything up. Enter Saul Angert, the eldest son of Eli Angert, aka June's late father's mortal enemy.

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.

Two hundred years of secrets and lies are bleeding into the present, and high school seniors, Hunter Morrissey and Rowen Corbett, find themselves linked with unseen forces shrouded in mystery and violence in the quaint river town of Sleepy Hollow...but the dark water of the Hudson River is not the only blackness looming in the distance. Truths, buried and long forgotten, have risen at a time when the veil between the living and the dead is at its thinnest.

When Chloe falls asleep in study hall, it is the middle of May. When she wakes up, snow is on the ground and she can't remember the last six months of her life. Before, she'd been a mediocre student. Now she's on track for valedictorian and is being recruited by Ivy League schools. Before, she never had a chance with super jock Blake. Now he's her boyfriend. Before, she and Maggie were inseparable. Now her best friend won't speak to her. What happened to Chloe? Remembering the truth could be more dangerous than she knows…

Abbi has just arrived at UW Madison for her freshman year. But on her second day, she wakes up to a different world: 1983. That is just the first stop on Abbi's journey backward through time. Will is a charming college freshman from 1927 who travels forward through time. When Abbi and Will meet in the middle, love adds another complication to their lives.

Casey Donovan has issues: hair, height, and uncontrollable trips to the 19th century! And now this - she's accidentally taken Nate Mackenzie, the cutest boy in the school, back in time. Awkward.

When fifteen-year-old Jacob Lau is pulled from the crumpled remains of his mother's car, no one can explain why he was driving or why the police can't find his mother's body. Made a ward of his uncle and thousands of miles from home, a beautiful and mysterious neighbor, Dr. Abigail Silva, offers to use her unique abilities to help him find his mom. In exchange, she requires Jacob to train as a Soulkeeper, a gifted warrior charged with protecting human souls. He agrees to her demands, desperate for any clue to the mystery of his mother's disappearance.

At thirty-five, Mika Suzuki’s life is a mess. Her last relationship ended in flames. Her roommate-slash-best friend might be a hoarder. She’s a perpetual disappointment to her traditional Japanese parents. And, most recently, she’s been fired from her latest dead-end job. Mika is at her lowest point when she receives a phone call from Penny—the daughter she placed for adoption sixteen years ago. Penny is determined to forge a relationship with her birth mother, and in turn, Mika longs to be someone Penny is proud of. Faced with her own inadequacies, Mika embellishes a fact about her life.

Blue Echohawk doesn't know who she is. She doesn't know her real name or when she was born. Abandoned at two and raised by a drifter, she didn't attend school until she was ten years old. At nineteen, when most kids her age are attending college or moving on with life, she is just a senior in high school. With no mother, no father, no faith, and no future, Blue Echohawk is a difficult student, to say the least.

Hunter Yee has perfect aim with a bow and arrow, but all else in his life veers wrong. He’s sick of being haunted by his family’s past mistakes. The only things keeping him from running away are his little brother, a supernatural wind, and the bewitching girl at his new high school. Luna Chang dreads the future. Graduation looms ahead, and her parents’ expectations are stifling. When she begins to break the rules, she finds her life upended by the strange new boy in her class, the arrival of unearthly fireflies, and an ominous crack spreading across the town of Fairbridge.

Eleanor Higgins has an incredible talent for matchmaking - for everyone but herself. But when her best friend, Morgan, asks for Eleanor's help to set her up on a date, well, that's where it gets complicated. Morgan is funny and dashing, and she's sexier in blue jeans and a cowboy hat than any ranch hand has a right to be. She also just came out. The thing is, Eleanor's had a crush on Morgan since forever, and has spent her entire life convincing herself that Morgan was off limits.

Childhood friends Patricia Delfine and Laurence Armstead didn't expect to see each other again after parting ways under mysterious circumstances during high school. After all, the development of magical powers and the invention of a two-second time machine could hardly fail to alarm one's peers and families. But now they're both adults, living in the hipster mecca San Francisco, and the planet is falling apart around them.

Vermont, 1972. Carole LaPorte has a satisfying, ordinary life. She cares for her children, balances the books for the family's auto shop, and laughs when her husband slow dances her across the kitchen floor. Her tragic childhood might have happened to someone else. But now her mind is playing tricks on her. The accounts won't reconcile and the murmuring she hears isn't the television.

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.