Sam’s summer isn’t off to a great start. Her boyfriend, Eli, ditched her for a European backpacking trip, and now she’s a counselor at Camp Blue Springs: the summer camp to which her 11-year-old self swore never to return. Sam expects the next seven weeks to be a total disaster. That is, until she meets Gavin, the camp’s sailing instructor, who turns her expectations upside down.

Belly measures her life in summers. Everything good, everything magical happens between the months of June and August. Winters are simply a time to count the weeks until the next summer, a place away from the beach house, away from Susannah, and most importantly, away from Jeremiah and Conrad. They are the boys that Belly has known since her very first summer—they have been her brother figures, her crushes, and everything in between. But one summer, one wonderful and terrible summer, the more everything changes, the more it all ends up just the way it should have been all along.

Four years ago, Brynn left Saint Ambrose School following the shocking murder of her favorite teacher—a story that made headlines after the teacher’s body was found by three Saint Ambrose students in the woods behind their school. The case was never solved. Now that Brynn is moving home and starting her dream internship at a true-crime show, she’s determined to find out what really happened.

Nineteen-year-old Sydney has the perfect summer mapped out. She's spending the next four and a half weeks travelling through Europe with her childhood best friend, Leela. Her plans do not include Leela's cheating ex-boyfriend showing up on the flight to London, falling for the cheating ex-boyfriend's très hot friend, monitoring her mother's spiraling mental health via texts, or feeling like the rope in a friendship tug-of-war.

Sonny Ardmore is an excellent liar. She lies about her dad being in prison. She lies about her mom kicking her out. And she lies about sneaking into her best friend's house every night because she has nowhere else to go. Amy Rush might be the only person Sonny shares everything with - secrets, clothes, even a nemesis named Ryder Cross.

You know, being friends with two cute boys does have its benefits. There's Danny. Danny is a golden boy in every way. He has dreamy blue eyes and blonde hair that always looks perfect, even when it's windblown or been stuck under a football helmet. He's the boy every girl crushes on. The boy I get into trouble with, the boy I fight with, the hot quarterback no girl can resist, not even me. Being with Danny is like being on an adventure. He has a bright, contagious smile and abs to die for. He's pretty much irresistible.

It's been over a decade since Nora left her hometown of Scupper Island, Maine, and very seldom looked back. She's carved out a successful life in Boston, where no one knows her as the awkward girl with the delinquent sister and the dad who left, but a not-as-dramatic-as-it-sounds brush with death has her taking stock of her life. Inspired to reconnect with her prickly mother and snarky teenage niece, Nora returns home for the summer, where she's forced to face the people she's spent the last ten years trying to avoid.

Sixteen-year-old Lara Jean Song keeps her love letters in a hatbox her mother gave her. They aren’t love letters that anyone else wrote for her; these are ones she’s written. One for every boy she’s ever loved - five in all. When she writes, she pours out her heart and soul and says all the things she would never say in real life, because her letters are for her eyes only. Until the day her secret letters are mailed, and suddenly, Lara Jean’s love life goes from imaginary to out of control.

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.

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.

Judy Lohden is your above-average 16-year-old: sarcastic and vulnerable, talented and uncertain, full of big dreams for a big future. With a singing voice that can shake an auditorium, she should be the star of Darcy Arts Academy, the local performing-arts high school. So why is a girl this promising hiding out in a seedy motel room on the edge of town?

He was tall, at least six feet, with dirty blond hair that hung over his eyes. His T-shirt read Nietzsche Is My Homeboy. So, that was Matt. Who Julie Seagles likes. A lot. But there is also Finn. Who she flat out loves. Complicated? Awkward? Completely. But really, how was this freshly-minted Boston transplant and newbie college freshman supposed to know that she would end up living with the family of an old friend of her mother’s? This was all supposed to be temporary.

Faith Holland left her hometown after being jilted at the altar. Now a little older and wiser, she's ready to return to the Blue Heron Winery, her family's vineyard, to confront the ghosts of her past, and maybe enjoy a glass of red. After all, there's some great scenery there.... Like Levi Cooper, the local police chief - and best friend of her former fiancé. There's a lot about Levi that Faith never noticed, and it's not just those deep green eyes.

Penny spends her afternoons sitting outside a sandwich shop, surrounded by ghosts. Fourteen years ago, this shop was her childhood dance studio - and she was a dancer on the rise. Now she’s a suburban housewife, dreading the moment her son departs for MIT, leaving her with an impeccably decorated McMansion and a failing marriage. She had her chance at wild, stars-in-her-eyes happiness, but that was a lifetime ago. After The Kiss. Before The Decision.

Postcard-perfect Jar Island is home to charming tourist shops, pristine beaches, amazing oceanfront homes - and three girls secretly plotting revenge. KAT is sick and tired of being bullied by her former best friend. LILLIA has always looked out for her little sister, so when she discovers that one of her guy friends has been secretly hooking up with her, she’s going to put a stop to it. MARY is perpetually haunted by a traumatic event from years past, and the boy who’s responsible has yet to get what’s coming to him. None of the girls can act on their revenge fantasies alone without being suspected. But together…anything is possible .