Liam Saunders-Chang is one of the last humans left on Mars. The son of two scientists who have been racing against time to create technology vital to humanity's survival, Liam, along with his friend Phoebe, will be on the last starliner to depart before Mars, like Earth before it, is destroyed. Or so he thinks. Because before this day is over, Liam and Phoebe will make a series of profound discoveries about the nature of time and space and find out that the human race is just one of many in our universe locked in a dangerous struggle for survival.

When Ruby woke up on her tenth birthday, something about her had changed. Something alarming enough to make her parents lock her in the garage and call the police. Something that got her sent to Thurmond, a brutal government "rehabilitation camp." She might have survived the mysterious disease that killed most of America's children, but she and the others emerged with something far worse: frightening abilities they cannot control. Now sixteen, Ruby is one of the dangerous ones.

Tally is about to turn sixteen, and she can’t wait. In just a few weeks, she’ll have the operation that will turn her from a repellent ugly into a stunningly attractive pretty. And as a pretty, she’ll be catapulted into a high-tech paradise where her only job is to have fun. But Tally’s new friend Shay isn’t sure she wants to become a pretty. When Shay runs away, Tally learns about a whole new side of the pretty world—and it isn’t very pretty. The authorities offer Tally a choice: find her friend and turn her in, or never turn pretty at all. Tally’s choice will change her world forever.

Who you want people to be makes you blind to who they really are. It’s been a year since Billie Flanagan — a Berkeley mom with an enviable life — went on a solo hike in Desolation Wilderness and vanished from the trail. Her body was never found, just a shattered cellphone and a solitary hiking boot. Her husband and teenage daughter have been coping with Billie’s death the best they can: Jonathan drinks as he works on a loving memoir about his marriage; Olive grows remote, from both her father and her friends at the all-girls school she attends.

In 1948, an alien starship crash-landed in the New Mexico desert and brought with it the key to mankind’s future. Code-named the Rho Project, the landing was shrouded in secrecy, and only the highest-ranking US government and military personnel knew it existed. Until now....

Sixteen-year-old Jimi knows people change, but nothing could prepare her for what's about to happen to her best friend, Del. Del is obsessed with becoming a chimera: a person who pays back-alley geneticists, known as "genies", to illegally splice animal genes into their own. The resulting physical changes have scared lawmakers into drafting legislation declaring chimeras officially nonpersons, so when Del goes missing, Jimi is desperate to find him before he alters himself forever.

Jeremy is not excited about the prospect of spending the summer with his dad and his uncle in a seaside cabin in Oregon. It's the first summer after his parents' divorce, and he hasn't exactly been seeking alone time with his dad. He doesn't have a choice, though, so he goes...and on his first day takes a walk on the beach and finds himself intrigued by a boy his age running by. Eventually, he and Runner Boy (Evan) meet--and what starts out as friendship blooms into something neither boy is expecting... and also something both boys have been secretly hoping for.

Now: Sixteen-year-old Jesse is used to living with the echoes of the past. Her older brother died in the September 11th attacks, and her dad since has filled their home with anger and grief. When Jesse gets caught up with the wrong crowd, one momentary hate-fueled decision turns her life upside down. The only way to make amends is to face the past, starting Jesse on a journey that will reveal the truth about how her brother died. Then: In 2001, 16-year-old Alia is proud to be Muslim....it's being a teenager that she finds difficult.

Cruz Coronado leaves his tranquil home in Hawaii to join 23 talented kids from around the globe to train at the Explorer Academy with the world's leading scientists to become the next generation of great explorers. But for Cruz, there's more at stake. No sooner has he arrived at the Academy than he discovers that his family has a mysterious past with the organization that could jeopardize his future. In the midst of codebreaking and cool classes, new friends, and augmented reality expeditions, Cruz must tackle the biggest question of all: Who is out to get him, and why?

The first day at a new school is tough for any kid, but it's especially scary when you're going to a school for spies. Cammie Morgan has spent her whole life dreaming of becoming a Gallagher Girl, but she has no idea what she’ll face when she arrives at The Gallagher Academy for Exceptional Young Women. Secret passages? Check. Lab experiments that might make you lose your eyebrows (and other body parts)? Check. Classmates who are the smartest, strongest, most intimidating girls in the world? Double check.

Readers of I Am Number Four, The Maze Runner, and Legend will love this exciting new adventure series by the co-creator of the groundbreaking television show Twin Peaks, with its unique combination of mystery, heart-pounding action, and the supernatural. Will West is careful to live life under the radar. At his parents' insistence, he's made sure to get mediocre grades and to stay in the middle of the pack on his cross-country team. Then Will slips up, accidentally scoring off the charts on a nationwide exam.

Now Will is being courted by an exclusive prep school...and followed by men driving black sedans.

Jessa Whitworth knew she didn't belong in her ex-boyfriend Caleb's room. But she couldn't deny that she was everywhere - in his photos, his neatly folded T-shirts, even the butterfly necklace in his jeans pocket...the one she gave him for safekeeping on that day. His mother asked her to pack up his things - even though she blames Jessa for his accident. How could she say no? And maybe, just maybe, it will help her work through the guilt she feels about their final moments together.

This is a tale of missing persons. Madeleine and her mother have run away from their former life and settled in a rainy corner of Cambridge (in our world). Elliot, on the other hand, is in search of his father, who disappeared on the night his uncle was found dead. As Madeleine and Elliot move closer to unraveling their mysteries, they begin to exchange messages across worlds - through an accidental gap that hasn't appeared in centuries. But even greater mysteries are unfolding on both sides of the gap...

For Joshua Dread, middle school is proving to be, well, awkward. Not only do bullies pick on him, but do you see those supervillains over there trying to flood the world? The ones that everyone, including his best friend, Milton, are rooting for Captain Justice to take down? They're the Dread Duo, and they just happen to be his parents. As if trying to hide his identity wasn't hard enough, Joshua has started leaving a trail of exploding pencils and scorched handprints in his wake, and only Sophie, the new girl in town with a mysterious past, seems unsurprised.

The Cahill family has a secret. For five hundred years, they have guarded the 39 Clues - thirty-nine ingredients in a serum that transforms whomever takes it into the most powerful person on earth. If the serum got into the wrong hands, the disaster would rock the world. So certain Cahills have always made it their mission to keep the serum safe, buried, locked away. Until now. Thirteen-year-old Dan Cahill and his older sister, Amy, are the latest guardians of the Clues. They think they've done everything right, but a tiny mistake leads to catastrophe.