Lucille seems to have nothing going for her. With the bills piling in, the house falling apart around her, and her sister's growing distress, it is precisely the worst possible moment for Lucille to fall recklessly in love with her best friend's twin brother, Digby, who is practically engaged.

Being the middle child has its ups and downs. But for Grace, an only child who was adopted at birth, discovering that she is a middle child is a different ride altogether. After putting her own baby up for adoption, she goes looking for her biological family, including: Maya, her loudmouthed younger bio sister, who has a lot to say about their newfound family ties. And Joaquin, their stoic older bio brother, who has no interest in bonding over their shared biological mother.

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.

Spencer covets her sister's boyfriend. Aria's fantasizing about her English teacher. Emily's crushing on the new girl at school. And Hanna uses some ugly tricks to stay beautiful. But they've all kept an even bigger secret since their friend Alison vanished.

After grad school, Shay Dixon feels like she's had enough for awhile. Inspired by her spiritual adviser - a soul-soothing blues player named Nina Simon - Shay calls her estranged mother Nona for the first time in years, and shocks herself by asking if it would be okay to come home for a while.

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.

Amanda Hardy is the new girl in school. Like anyone else, all she wants is to make friends and fit in. But Amanda is keeping a secret, and she's determined not to get too close to anyone. But when she meets sweet, easygoing Grant, Amanda can't help but start to let him into her life. As they spend more time together, she realizes just how much she is losing by guarding her heart. She finds herself yearning to share with Grant everything about herself, including her past.

Torrey Grey is famous. At least, on the internet. Thousands of people watch her popular videos on fashion and beauty. But when Torrey's sister is killed in an accident - maybe because of Torrey and her videos - Torrey's perfect world implodes. Now, strangers online are bashing Torrey. And at her new school, she doesn't know who to trust. Is queen bee Blair only being sweet because of Torrey's internet infamy? What about Raylene, who is decidedly unpopular, but seems to accept Torrey for who she is?

Five months ago, Valerie Leftman's boyfriend, Nick, opened fire on their school cafeteria. Shot trying to stop him, Valerie inadvertently saved the life of a classmate, but was implicated in the shootings because of the list she helped create. A list of people and things she and Nick hated. The list he used to pick his targets. Now, after a summer of seclusion, Val is forced to confront her guilt as she returns to school to complete her senior year.

When Adam Blake lands the best elective ever in his senior year, serving as an aide to the school psychologist, he thinks he's got it made. Sure, it means a lot of sitting around, which isn't easy for a guy with ADHD, but he can't complain, since he gets to spend the period texting all his friends. Then the doctor asks him to track down the troubled freshman who keeps dodging her, and Adam discovers that the boy is Julian - the foster brother he hasn't seen in five years.

Maybelline Chen isn’t the Chinese Taiwanese American daughter her mother expects her to be. May prefers hoodies over dresses and wants to become a writer. When asked, her mom can’t come up with one specific reason for why she's proud of her only daughter. May’s beloved brother, Danny, on the other hand, has just been admitted to Princeton. But Danny secretly struggles with depression, and when he dies by suicide, May's world is shattered.

Lily Jo McGrother, born Timothy McGrother, is a girl. But being a girl is not so easy when you look like a boy. Especially when you’re in the eighth grade. Dunkin Dorfman, birth name Norbert Dorfman, is dealing with bipolar disorder and has just moved from the New Jersey town he’s called home for the past 13 years. This would be hard enough, but the fact that he is also hiding from a painful secret makes it even worse. One summer morning, Lily Jo McGrother meets Dunkin Dorfman, and their lives forever change.

Sammie McCoy is a girl with a plan: graduate at the top of her class and get out of her small town as soon as possible. Nothing will stand in her way - not even the rare genetic disorder the doctors say will slowly steal her memories and then her health. So the memory book is born: a journal written to Sammie's future self, so she can remember everything, from where she stashed her study guides to just how great it feels to have a best friend again.

Helena Conway has fallen in love. Unwillingly. Unwittingly. But not unprovoked. Kit Isley is everything she's not - unstructured, untethered, and not even a little bit careful. It could all be so beautiful...if he wasn't dating her best friend. Helena must defy her heart, do the right thing, and think of others. Until she doesn't.

Astronomy-loving Calliope June has Tourette's syndrome, so she sometimes makes faces or noises that she doesn't mean to make. When she and her mother move yet again, she tries to hide her TS. But it isn't long before the kids at her new school realize she's different. Only Calliope's neighbor, who is also the popular student body president, sees her as she truly is - an interesting person and a good friend.