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.

Before Jake’s grandfather died, he was on the trail of a centuries-old mystery. And he has entrusted that mystery to Jake, leaving behind a set of hidden codes, riddles, maps, and other clues that lead Jake and his friends on a scavenger hunt into the heart of Colorado’s wild and rugged Rocky Mountain National Park.

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.

Middle school is hard. Solving cases for the FBI is even harder. Doing both at the same time - well, that's just crazy. But that doesn't stop Florian Bates! Get to know the only kid on the FBI director's speed dial - and several international criminals' most wanted lists - in this adventurous series that School Library Journal says combines "elements of Alex Rider, James Bond, and Sherlock Holmes".

On a family trip to Paris, Greg Rich's parents disappear. They're not just missing from the city - they're missing from the century. So, Greg does what any other 14-year-old would do: He travels through time to rescue them. Greg soon finds out that his family history is tied to the legendary Three Musketeers. But when he meets them, they're his age, and they'll only live long enough to become true heroes if he can save them.

Janner Igiby, his brother, Tink, and their disabled sister, Leeli, are gifted children as all children are, loved well by a noble mother and ex-pirate grandfather. But they will need all their gifts and all that they love to survive the evil pursuit of the venomous Fangs of Dang, who have crossed the dark sea to rule the land with malice. The Igibys hold the secret to the lost legend and jewels of good King Wingfeather of the Shining Isle of Anniera.

Teddy Fitzroy, his family, and some other FunJungle employees have been invited to visit a bison ranch just outside Yellowstone National Park that FunJungle’s owner, J.J. McCracken, is considering purchasing. But as usual, trouble isn’t far behind. The ranch’s endangered bison have been mysteriously disappearing. Then a massive local grizzly bear named Sasquatch breaks into the house, causing chaos. In the aftermath, Kandace McCracken discovers that her exceptionally expensive sapphire necklace has vanished.

After an escaped kangaroo starts a fire that burns down his house, Teddy Fitzroy accepts an invitation to go to Malibu with his girlfriend, Summer, and her mother, Kandace. He’s hoping to spend some time relaxing on the beach, but wherever Teddy goes, trouble isn’t far behind. First, a massive dead whale has washed up on the beach—and before anyone can determine what killed it, it explodes. Doc, the head vet from FunJungle, suspects something fishy is going on and ropes Teddy and Summer into helping him investigate.

Twelve-year-old Theodore “Teddy” Roosevelt Fitzroy believes that Henry, the hippopotamus at the brand-new FunJungle, has been murdered. The zoo’s top brass claim the hippo went belly up the natural way, but Teddy and his feisty friend Summer McCraken have other ideas. Could the culprit be FunJungle’s animal-hating head of operations? Or is it FunJungle’s owner - Summer’s dad - a man who is much more concerned about money than animal welfare? The deeper Teddy and Summer dig, the more danger they’re in - because when it comes to hippo homicide, the truth can’t be caged!

Trille and Lena may be getting older, but they still find everyday adventure - and trouble - in their coastal village, including sinking every raft they build, getting little sisters stuck up flag poles, and attending those dreaded music lessons. But that’s not all. The arrival of a less-than-encouraging new soccer coach is putting twelve-year-old Lena's goalkeeping career in doubt. And Trille is wondering how to impress the girl who has just joined his class.

Twelve-year-old Sophie has never quite fit into her life. She’s skipped multiple grades and doesn’t really connect with the older kids at school, but she’s not comfortable with her family, either. The reason? Sophie’s a Telepath, someone who can read minds. No one knows her secret - at least, that’s what she thinks.... But the day Sophie meets Fitz, a mysterious (and adorable) boy, she learns she’s not alone. He’s a Telepath too, and it turns out the reason she has never felt at home is that, well...she isn’t. Fitz opens Sophie’s eyes to a shocking truth....

After a botched escape plan from her boarding school, Abigail is stunned to discover the school is actually a cover for an elite spy ring called The Center, along with being training grounds for future spies. Even more shocking? Abigail's mother is a top agent for The Center and she has gone MIA, with valuable information that many people would like to have - at any cost. Along with a former nemesis and charming boy from her grade, Abigail goes through a crash course in Spy Training 101, often with hilarious - and sometimes painful - results.

Most kids have enough to deal with between school, homework, extracurricular activities, and friends, but Molly Bigelow isn't your typical tween. By day, Molly attends MIST - the Metropolitan Institute of Science and Technology - but it's what she's learning outside of school that sets her apart from her classmates. Molly is a zombie hunter, just like her mother.

What would happen if you discovered that your family was one of the most powerful in human history? What if you were told that the source of the family's power was hidden around the world, in the form of 39 Clues? What if you were given a choice - take a million dollars and walk away...or get the first Clue? If you're Amy and Dan Cahill, you take the Clue - and begin a very dangerous race.

Charlie Thorne is a genius. Charlie Thorne is a renegade. Charlie Thorne isn’t going down without a fight. After tracking down incredible discoveries by Einstein and Darwin, Charlie is back. This time, the great ruler Cleopatra has left behind an extremely valuable and powerful treasure, its location encoded on an ancient stone tablet.

What do you get when you add up one middle school bully, two bank robbers, 57 puppy-mill dogs, 4,000 missing dollars, and five daring troublemakers led by the incomparable Riley Mack? One crazy caper! In this merry, mischievous romp, master storyteller Chris Grabenstein, the award-winning author of Escape From Mr. Lemoncello's Library, teams with a full-cast of audio talent to introduce Riley Mack, a one-of-a-kind 12-year-old hometown hero.

Kay’s life is pretty boring. She goes to school, spends quiet evenings at home with her foster mom, and has the occasional brush with mischief thanks to her best and only friend Will. But everything is about to change. One night, Kay tags along on another one of Will’s adventures, and they both end up recruited by a talking fox to become Netherjacks, protectors of all the worlds. Once they arrive at the training academy, though, Will is paired with a legendary Netherwing mount and quickly rises in the trainee ranks, leaving Kay behind with barely a glance.

“Before I can begin my tale, you need to know about the king's panties.” So begins the epic adventure of 14-year-old Nigel, digger of latrines, shoveler of poop, and the single greatest threat to all the humans, elves, and halflings of Esteria. Nigel needs to escape from military school. Who can blame him? After all, the king just declared war on the gorks, and he's pretty sure his latrine-digging skills aren't going to be much good on the front lines.

A mouse has to do what a mouse has to do. Ragweed is determined to see the world. He leaves his family and cozy country home and sets off by train for the big city. What wonders await him: music, excitement, new friends … and cunning, carnivorous cats! Silversides is the purring president of F.E.A.R. (Felines Enraged About Rodents), a group dedicated to keeping cats on top, people in the middle, and mice on the bottom. Can Ragweed and his motley yet musical crew of city nice—Clutch, Dipstick, Lugnut, and Blinker—band together to fight their feline foe?

When a truck ran down Tyler, he didn't think he'd wake back up...but he did. Now he's in a fantastical world filled with wonder, adventure, and battling monsters tamed by humans like one of his favorite video games.

The Menagerie trilogy comes to a fantastic conclusion in Krakens and Lies, the third magical and mysterious adventure from Tui T. Sutherland and Kari H. Sutherland. Someone has been sabotaging the Menagerie, and Logan and Zoe are on the case. But their troubles only get worse when the basilisk escapes its enclosure and the merpeople go on strike - leaving the kraken to its own devices. The race is on to solve the mystery and save the Menagerie in this riveting, action-packed finale!

There’s no doubt about it: These kids are nerds. Awkward, unpopular, uncool as uncool can be—and yet, there’s something about these “nerds” that nobody else knows. These dweebs are actually superspies who use their dorky skills to battle the evil Hyena and other villainous baddies.

In the small town of Xanadu, Wyoming, lies the Menagerie, a top secret facility filled with unicorns, dragons, phoenixes, and other fairy tale creatures. At least, it was a secret - until six griffin cubs escaped. If Logan and Zoe don't get the cubs back fast, the entire Menagerie will be shut down. The race is on and the resulting adventure is only the beginning of a thrilling series that will leave listeners wanting a magical menagerie of their very own.

Most kids have enough to deal with between school, homework, extracurricular activities, and friends, but Molly Bigelow isn't your typical tween. By day, Molly attends MIST - the Metropolitan Institute of Science and Technology - but it's what she's learning outside of school that sets her apart from her classmates. Molly is a zombie hunter, just like her mother.

My name is Danny Day, and I live every day twice. The first time, it's a "discard day". It's kind of like a practice run. At the end of the day, I go to bed, wake up, and poof everything gets reset, everything except my memory, that is. The second time, everything is normal, just like it is for everyone else. That's when everything counts and my actions stick. As you could probably guess, "Sticky Day" Danny is very different from "Discard Day" Danny.

Dan Brown meets Jason Bourne in this riveting middle-grade mystery thriller. When a young boy is discovered in Washington DC's National Gallery without any recollection of who he is, so begins a high-stakes race to unravel the greatest mystery of all: his identity. As the stakes continue to rise, the boy must piece together the disjointed clues of his origins while using his limited knowledge to stop one of the greatest art frauds ever attempted.

Teens and pre-teens flock to any new offering from New York Times best-selling author Gordon Korman. Told through multiple viewpoints, Ungifted follows Donovan Curtis through his year at a magnet school for gifted and talented kids. Thanks to an administrative foul-up, the decidedly mediocre student Donovan finds himself enrolled in the Academy of Scholastic Distinction. Out of place and out of luck, Donovan joins the robotics team. And while he learns a few lessons from his gifted classmates, he also teaches a few of his own.

It all started with a peanut butter cup...which leads Ben Braver to a secret school for kids with super abilities. Ben has never had any special powers - and maybe never will. But could this be his chance to become the superhero he's always dreamed of? The Super Life of Ben Braver is the first book in a hilarious adventure series about the greatness that lies within any middle schooler who dreams big from Marcus Emerson, the author of the smash hit Diary of a 6th Grade Ninja series.

Everything I’d known about the world was a lie. On my thirteenth birthday, I, Alcatraz Smedry (yes, I got named after a prison, don’t ask), received my inheritance: a bag of sand. And then I accidentally destroyed my foster parents’ kitchen. It’s not my fault, things just break around me, I swear! I thought the sand was a joke until evil Librarians came to steal it. You’re probably thinking, “Librarians are nice people who recommend good books,” but that’s just what they want you to think!

Maeve Merritt chafes at the rigid rules at her London boarding school for “Upright Young Ladies.” When punishment forces her to sort through the trash, she finds a sardine tin that houses a foul-tempered djinni with no intention of submitting to a schoolgirl as his master. Soon an orphan boy from the charitable home next door, a mysterious tall man in ginger whiskers, a disgruntled school worker, and a take-no-prisoners business tycoon are in hot pursuit of Maeve and her magical discovery.