Simon O'Keeffe's biggest claim to fame should be the time his dad accidentally gave a squirrel a holy sacrament. Or maybe the alpaca disaster that went viral on YouTube. But the story the whole world wants to tell about Simon is the one he'd do anything to forget: the story in which he's the only kid in his class who survived a school shooting. Two years after the infamous event, twelve-year-old Simon and his family move to the National Quiet Zone—the only place in America where the internet is banned.

Meet Resilience, a Mars rover determined to live up to his name. Res was built to explore Mars. He was not built to have human emotions. But as he learns new things from the NASA scientists who assemble him, he begins to develop humanlike feelings. Maybe there’s a problem with his programming…. Human emotions or not, launch day comes, and Res blasts off to Mars, accompanied by a friendly drone helicopter named Fly. But Res quickly discovers that Mars is a dangerous place filled with dust storms and giant cliffs.

The Lilac. The bard songs say that she’s the world’s most fearsome bounty hunter. That there’s no criminal she can’t catch, no mystery she can’t solve. None of that is true. Yet. In reality, the Lilac is just a kid, and the bard who wrote all that is her best friend, Dulcinetta. But the Lilac has set her goals on becoming the best bounty hunter in the Thirteen Kingdoms—and when a priceless artifact goes missing from the home of famed monster hunter Baron Angbar, the Lilac and Netta are eager to apprehend the thief and make a name for themselves.

When young Arthur Conan Doyle is o­ffered a spot at Baskerville Hall, a secret school for extraordinarily gifted children, he is elated at being chosen—and being given a chance to turn his family’s fortunes around. There, Arthur makes quick friends with Irene Eagle, a girl who boldly strides into action, and Jimmie Moriarty, a boy whose brilliance rivals Arthur’s own. Together, they discover that their new school is a peculiar place, home to leaning towers and unexplained explosions, prowling wolves and extinct birds.

Everyone knows Fall Hollow is haunted. It has been ever since Abigail Snook went into the woods many years ago, never to be seen again. Since then, it’s tradition for the sixth graders at Beckett Elementary to play the Bellwoods Game on Halloween night. Three kids are chosen to go into the woods. Whoever rings the bell there wins the game and saves the town for another year, but if Abigail’s ghost captures the players first, the spirit is let loose to wreak havoc on Fall Hollow—or so the story goes.

Urchin Beach isn't the sort of place where bad things happen. The little seaside town is too lucky for that. But then one day, a thief steals something precious-the town's dragonfly staff, which is the source of all its good fortune and the most important part of the upcoming Dragonfly Day Festival.

Ben Ripley may only be in middle school, but he's already pegged his dream job: CIA or bust. Unfortunately for him, his personality doesn't exactly scream "secret agent". In fact Ben is so awkward, he can barely get to school and back without a mishap. Because of his innate nerdiness, Ben is not surprised when he is recruited for a magnet school with a focus on science - but he's entirely shocked to discover that the school is actually a front for a junior CIA academy.

Herc Beal knows who he's named after—a mythical hero—but he's no superhero. He's the smallest kid in his class. So when his homeroom teacher at his new middle school gives him the assignment of duplicating the mythical Hercules's amazing feats in real life, he's skeptical. After all, there are no Nemean Lions on Cape Cod—and not a single Hydra in sight.

Eleven-year-old Kemi Carter loves scientific facts, specifically probability. It's how she understands the world and her place in it. Kemi knows her odds of being born were 1 in 5.5 trillion, and that the odds of her having the best family ever were even lower. Yet somehow, Kemi lucked out. But everything Kemi thought she knew changes when she sees an asteroid hover in the sky, casting a purple haze over her world. Amplus-68 has an 84.7% chance of colliding with earth in four days, and with that collision, Kemi’s life as she knows it will end.

When a mysterious little free library (guarded by a large orange cat) appears overnight in the small town of Martinville, eleven-year-old Evan plucks two weathered books from its shelves, never suspecting that his life is about to change. Evan and his best friend Rafe quickly discover a link between one of the old books and a long-ago event that none of the grown-ups want to talk about. The two boys start asking questions whose answers will transform not only their own futures, but the town itself.

"Are you a gifted child looking for special opportunities?" Dozens of children respond to this peculiar ad in the newspaper and are then put through a series of mind-bending tests, which readers take along with them. Only four children—two boys and two girls—succeed. Their challenge: to go on a secret mission that only the most intelligent and inventive children could complete. To accomplish it they will have to go undercover at the Learning Institute for the Very Enlightened, where the only rule is that there are no rules.

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.

For as long as Ryanna Stuart can remember, her summers have been spent with her father and his new wife. Just the three of them, structured, planned, and quiet. But this summer is different. This summer, she’s received a letter from her grandparents—grandparents neither she nor her dad have spoken to since her mom’s death—inviting her to stay with them at an old summer camp in the Poconos.

Maggie Stephens's stutter makes school especially hard. She will do almost anything to avoid speaking in class or calling attention to herself. So when her unsympathetic father threatens to send her away for so-called "treatment," she reluctantly agrees to her mother's intervention plan: a few weeks in the fresh air of Wildoak Forest, visiting a grandfather she hardly knows. It is there, in an extraordinary twist of fate, that she encounters an abandoned snow leopard cub, an exotic gift to a wealthy Londoner that proved too wild to domesticate.

After receiving a frantic letter from her newly-wed cousin begging for someone to save her from a mysterious doom, Noemí Taboada heads to High Place, a distant house in the Mexican countryside. She’s not sure what she will find—her cousin’s husband, a handsome Englishman, is a stranger, and Noemí knows little about the region.