Bell has spent his whole life—all eleven years of it—on Mars. But he's still just a regular kid—he loves cats and any kind of cake, and is curious about the secrets the adults in the US colony are keeping. Like, why don't they have contact with anyone on the other Mars colonies? Why are they so isolated? When a virus breaks out and the grown-ups all fall ill, Bell and the other children are the only ones who can help. It's up to Bell—a regular kid in a very different world—to uncover the truth and save his family...and possibly unite an entire planet.

Regan Fitz and Elliot Mason have been enemies since they started training to become Glitchers - people who travel through time to preserve important historical events. But everything changes when they find a letter from Regan’s future self, warning them about an impending disaster that threatens them and everyone they know.

Zoe Washington isn’t sure what to write. What does a girl say to the father she’s never met, hadn’t heard from until his letter arrived on her 12th birthday, and who’s been in prison for a terrible crime? A crime he says he never committed. Could Marcus really be innocent? Zoe is determined to uncover the truth. Even if it means hiding his letters and her investigation from the rest of her family. Everyone else thinks Zoe’s worrying about doing a good job at her bakery internship

Mimi is not thrilled to be spending her summer in Karachi, Pakistan, with grandparents she’s never met. Secretly, she wishes to find her long-absent father, and plans to write to him in her beautiful new journal. The cook's daughter, Sakina, still hasn't told her parents that she'll be accepted to school only if she can improve her English test score - but then, how could her family possibly afford to lose the money she earns working with her Abba in a rich family's kitchen?

Lou Montgomery has the voice of an angel, or so her mother tells her and anyone else who will listen. But Lou can only hear the fear in her own voice. She's never liked crowds or loud noises or even high fives; in fact, she's terrified of them, which makes her pretty sure there's something wrong with her. When Lou crashes their pickup on a dark and snowy road, child services separate the mother-daughter duo. Now she has to start all over again at a fancy private school far away from anything she's ever known.

April had absolutely no intention of becoming the only person who knows that Gabriel Winterborne, the missing-and-presumed-dead billionaire, is actually living in the basement of Winterborne House, sharpening his swords and looking for vengeance. Now it’s up to April to keep him alive. But there’s only so much a 12-year-old girl can do, so April must turn to the other orphans for help. Together, they’ll have to unravel the riddle of a missing heir and a creepy legend, and find a secret key, before the only home they’ve ever known is lost to them forever.

In the future, robots have eliminated humans, and 12-year-old robot XR_935 is just fine with that. Without humans around, there is no war, no pollution, no crime. Every member of society has a purpose. Everything runs smoothly and efficiently. Until the day XR discovers something impossible: a human girl named Emma.

Ever since Stella was a puppy, she was trained to use her powerful beagle nose to sniff out chemicals used in explosives and warn her human handler in order to keep people safe. But during a routine security inspection, Stella is distracted and misses the scent of an explosive chemical. The sound of the blast is loud and scary. Stella survives, but her handler is gone. Stella blames herself, certain she’s a bad dog. Scared of loud noises, especially thunder and fireworks, Stella struggles with her anxiety and must be retired from being a service animal.

A heartfelt and funny story about a shy 11-year-old who learns to manage her anxiety through improv classes - and discovers her activist voice. From Margaret Dilloway, author of Summer of a Thousand Pies, and perfect for fans of Sharon Draper, Lynda Mullaly Hunt, and Holly Goldberg Sloan.

Claire has absolutely no interest in the paranormal. She's a scientist, which is why she can't think of anything worse than having to help out her dad on one of his ghost-themed Chicago bus tours. She thinks she's made it through when she sees a boy with a sad face and dark eyes at the back of the bus. There's something off about his presence, especially because when she checks at the end of the tour...he's gone.

Can a robot survive in the wilderness? When robot Roz opens her eyes for the first time, she discovers that she is alone on a remote, wild island. She has no idea how she got there or what her purpose is - but she knows she needs to survive. After battling a violent storm and escaping a vicious bear attack, she realizes that her only hope for survival is to adapt to her surroundings and learn from the island's unwelcoming animal inhabitants. As Roz slowly befriends the animals, the island starts to feel like home - until, one day, the robot's mysterious past comes back to haunt her.

Amari Peters has never stopped believing her missing brother, Quinton, is alive. Not even when the police told her otherwise, or when she got in trouble for standing up to bullies who said he was gone for good. So when she finds a ticking briefcase in his closet, containing a nomination for a summer tryout at the Bureau of Supernatural Affairs, she’s certain the secretive organization holds the key to locating Quinton - if only she can wrap her head around the idea of magicians, fairies, aliens, and other supernatural creatures all being real.

From fixing the class computer to repairing old radios, 12-year-old Iris is a tech genius. But she's the only deaf person in her school, so people often treat her like she's not very smart. If you've ever felt like no one was listening to you, then you know how hard that can be. When she learns about Blue 55, a real whale who is unable to speak to other whales, Iris understands how he must feel. Then she has an idea: She should invent a way to "sing" to him! But he's 3,000 miles away. How will she play her song for him?

Sara Martinez is a hacker. She recently broke into the New York City foster care system to expose her foster parents as cheats and lawbreakers. However, instead of being hailed as a hero, Sara finds herself facing years in a juvenile detention facility and banned from using computers for the same stretch of time. Enter Mother, a British spy who not only gets Sara released from jail but also offers her a chance to make a home for herself within a secret MI5 agency. Operating out of a base in Scotland, the City Spies are five kids from various parts of the world.

Sixth grader Alec can’t put a good book down. So when Principal Vance lays down the law - pay attention in class, or else - Alec takes action. He can’t lose all his reading time, so he starts a club. A club he intends to be the only member of. After all, reading isn’t a team sport, and no one would want to join something called the Losers Club, right? But as more and more kids find their way to Alec’s club - including his ex-friend turned bully and the girl Alec is maybe starting to like - Alec notices something.