Jeremy “JB” Barnes is looking forward to spending the summer before seventh grade hanging on the beach. But his mother, a scientist, has called for him to join her aboard a research ship, where, instead, he’ll spend his summer seasick and bored as he stares out at the endless plastic, microbeads, and other floating debris, both visible and not, that make up the Great Pacific Garbage Patch. Miles and miles away, 12-year-old Sidney Miller is trying to come up with an alternate activity worthy of convincing her overprotective parents that she can skip summer camp.

In the turbulent summer of 1974, Kate Mularkey has accepted her place at the bottom of the eighth-grade social food chain. Then, to her amazement, the "coolest girl in the world" moves in across the street and wants to be her friend. Tully Hart seems to have it all - beauty, brains, ambition. On the surface they are as opposite as two people can be: Kate, doomed to be forever uncool, with a loving family who mortifies her at every turn.

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.

For 18 years, Jude Farraday has put her children’s needs above her own, and it shows - her twins, Mia and Zach, are bright and happy teenagers. When Lexi Baill moves into their small, close-knit community, no one is more welcoming than Jude. Lexi, a former foster child with a dark past, quickly becomes Mia’s best friend. Then Zach falls in love with Lexi and the three become inseparable. Jude does everything to keep her kids on track for college and out of harm’s way. It has always been easy - until senior year of high school. Suddenly she is at a loss.

Clare and Henry have known each other since Clare was six and Henry was 36. They were married when Clare was 23 and Henry was 31. Impossible but true, because Henry is one of the first people diagnosed with Chrono-Displacement Disorder: periodically his genetic clock resets and he finds himself misplaced in time, pulled to moments of emotional gravity from his life, past and future. His disappearances are spontaneous, his experiences unpredictable, alternately harrowing and amusing.

Little River, New York, 1994: April Sawicki is living in a motorless motorhome that her father won in a poker game. Failing out of school, picking up shifts at a local diner, she’s left fending for herself in a town where she’s never quite felt at home. When she “borrows” her neighbor’s car to perform at an open mic night, she realizes her life could be much bigger than where she came from. After a fight with her dad, April packs her stuff and leaves for good, setting off on a journey to find a life that’s all hers.

Theodore Finch is fascinated by death, and he constantly thinks of ways he might die. But each time, something good, no matter how small, stops him. Violet Markey lives for the future, counting the days until graduation, when she can escape her Indiana town and her aching grief in the wake of her sister's recent death. When Finch and Violet meet on the ledge of the bell tower at school, it's unclear who saves whom.

When the only other virgin in her group of friends loses it at Keely's own 18th birthday party, she's inspired to take things into her own hands. She wants to have that experience too (well, not exactly like that - but with someone she trusts and actually likes), so she's going to need to find the guy, and fast. Problem is, she's known all the boys in her small high school forever, and it's kinda hard to be into a guy when you watched him eat crayons in kindergarten.

James and Alex have barely anything in common anymore - least of all their experiences in high school, where James is a popular senior and Alex is suddenly an outcast. But at home, there is Henry, the precocious 10-year-old across the street, who eagerly befriends them both. And when Alex takes up running, there is James’s friend Nathen, who unites the brothers in moving and unexpected ways.

Autumn and Finn used to be inseparable. But then something changed. Or they changed. Now, they do their best to ignore each other. Autumn has her boyfriend, Jamie, and her close-knit group of friends. And Finn has become that boy at school, the one everyone wants to be around. That still doesn't stop the way Autumn feels every time she and Finn cross paths, and the growing, nagging thought that maybe things could have been different. Maybe they should be together. But come August, things will change forever.

Tens of thousands of crows invading Auburn, Pennsylvania, is a problem for everyone in town except 17-year-old Leighton Barnes. For Leighton, it’s no stranger than her house, which inexplicably repairs itself every time her father loses his temper and breaks things. Leighton doesn’t have time for the crows - it’s her senior year, and acceptance to her dream college is finally within reach. But grabbing that lifeline means abandoning her sisters, a choice she’s not ready to face.

Trailblazing pop star, actor and director, Hayley Kiyoko debuts her first novel, a coming-of-age romance based on her breakthrough hit song and viral video, Girls Like Girls.

Dove "Birdie" Randolph works hard to be the perfect daughter and follow the path her parents have laid out for her: She quit playing her beloved soccer, she keeps her nose buried in textbooks, and she's on track to finish high school at the top of her class. But then Birdie falls hard for Booker, a sweet boy with a troubled past...whom she knows her parents will never approve of. When her estranged aunt, Carlene, returns to Chicago and moves into the family's apartment above their hair salon, Birdie notices the tension building at home.

When Nico Morris' older sister mysteriously disappears, her parents, family, and friends are devastated. But Nico can never admit what she herself feels: relief at finally being free of Sarah's daily cruelties. Then the best and worst thing happens: four years later, after dozens of false leads, Sarah is found. But this girl is much changed from the one Nico knew. She's thin and drawn when Sarah had been golden and athletic; timid and unsure instead of brash and competitive; and, strangest of all, sweet and kind when she had once been mean and abusive.

Dubbed "Dumplin'" by her former beauty queen mom, Willowdean has always been at home in her own skin. Her thoughts on having the ultimate bikini body? Put a bikini on your body. With her all-American-beauty best friend, Ellen, by her side, things have always worked...until Will takes a job at Harpy's, the local fast-food joint. There she meets Private School Bo, a hot former jock. Will isn't surprised to find herself attracted to Bo. But she is surprised when he seems to like her back.