Florian is 12 years old and has just moved to Washington. He's learning his way around using TOAST, which stands for the Theory of All Small Things. It's a technique he invented to solve life's little mysteries. But when he teaches it to his new friend Margaret, they uncover a mystery that isn't little. In fact, it's huge, and it involves the National Gallery, the FBI, and a notorious crime syndicate known as EEL. Can Florian decipher the clues and finish his homework in time to help the FBI solve the case?

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.

Welcome to the Sweet Tooth Ice Cream & Candy Shoppe, where the confections are a bit on the... unusual side. Rock candy that makes you weightless. Jawbreakers that make you unbreakable. Chocolate balls that make you a master of disguise. Four young friends - Nate, Summer, Trevor, and Pigeon - meet the grandmotherly Mrs. White, owner of the Sweet Tooth, and soon learn about the magical side effects of her candies.

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.

As the son of the world’s most famous tech billionaire, spoiled Jett Baranov has always gotten what he wanted. So when his father’s private jet drops him in the middle of the Arkansas wilderness, at a place called the Oasis, Jett can’t believe it. He’s forced to hand over his cell phone, eat grainy veggie patties, and participate in wholesome activities with the other kids, who he has absolutely no interest in hanging out with.

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.

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.

Charlie Thorne is a genius. Charlie Thorne is a thief. Charlie Thorne isn’t old enough to drive. And now, it’s up to her to save the world.... Decades ago, Albert Einstein devised an equation that could benefit all life on earth - or destroy it. Fearing what would happen if the equation fell into the wrong hands, he hid it. But now, a diabolical group known as the Furies are closing in on its location. In desperation, a team of CIA agents drags Charlie into the hunt, needing her brilliance to find it first - even though this means placing her life in grave danger.

Like his fellow lunarnauts - otherwise known as Moonies - living on Moon Base Alpha, twelve-year-old Dashiell Gibson is famous the world over for being one of the first humans to live on the moon. And he's bored out of his mind. Kids aren't allowed on the lunar surface, meaning they're trapped inside the tiny moon base with next to nothing to occupy their time - and the only other kid Dash's age spends all his time hooked into virtual reality games.

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.

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.

As the youngest in her family, Dory really wants attention; and more than anything, she wants her brother and sister to play with her. But she's too much of a baby for them, so she's left to her own devices - including her wild imagination and untiring energy. Her siblings may roll their eyes at her childish games, but Dory has lots of things to do: outsmarting the monsters all over the house, escaping from prison (aka time-out), and exacting revenge on her sister's favorite doll.

Harry Potter has never even heard of Hogwarts when the letters start dropping on the doormat at number four, Privet Drive. Addressed in green ink on yellowish parchment with a purple seal, they are swiftly confiscated by his grisly aunt and uncle. Then, on Harry's eleventh birthday, a great beetle-eyed giant of a man called Rubeus Hagrid bursts in with some astonishing news: Harry Potter is a wizard, and he has a place at Hogwarts School of Witchcraft and Wizardry. An incredible adventure is about to begin!

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.

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!

Florian is 12 years old and has just moved to Washington. He's learning his way around using TOAST, which stands for the Theory of All Small Things. It's a technique he invented to solve life's little mysteries. But when he teaches it to his new friend Margaret, they uncover a mystery that isn't little. In fact, it's huge, and it involves the National Gallery, the FBI, and a notorious crime syndicate known as EEL. Can Florian decipher the clues and finish his homework in time to help the FBI solve the case?

When a category three hurricane hits Miami Beach, it uncovers a body buried at the renowned Moroccan Hotel. The body is identified as the man who served as the hotel’s bell captain sixty years ago…and the presumed culprit of the million-dollar jewel heist that took place just before his disappearance.

Siblings Marlow and Zach Metzler are curious about EVERYTHING – asteroid-bound space probes, pirate ships in the woods, abandoned hotels hidden high in the mountains. Leo, a neighborhood cat, is curious about NOTHING – not pizza slices, not peacock feathers, not even laser pointers (especially not laser pointers).

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.

Siblings Alex and Zoe Sherlock take their last name as inspiration when choosing a summer job. After all, starting a detective agency has to be better than babysitting (boring), lawn mowing (sweaty), or cleaning out the attic (boring and sweaty). Their friends Lina, an avid bookworm, and Yadi, an aspiring cinematographer, join the enterprise, and Alex and Zoe’s retired reporter grandfather offers up his sweet aquamarine Cadillac convertible and storage unit full of cold cases. The group’s first target is the long-lost treasure supposedly hidden near their hometown Miami.

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.

On his 11th birthday, Jackson is nervous about moving up to middle school where he knows he'll be bullied by older kids, so he makes his wish, "I don't want to grow up!" When his 12th birthday rolls around, he discovers his wish came true: he's still 11, and he's starting fifth grade (again). At first, this is the perfect life. Jackson is the smartest kid in his class, the best on his baseball team, and the star of the school band. But after a few years of being eleven, he realizes his life is passing him by.

“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.

One hilarious Harlem family is on a mission to find the perfect way to celebrate their Papa's 40th birthday while discovering more about their mysterious grandparents in this heartfelt romp and latest installment to the New York Times best-selling series.

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.

What is it like to be spring cleaned? Find out in this tragicomic tale about a self-absorbed Hair Spider, an anxious Fluff Ball and a friendly Dust Bunny. The perilous journey of these three friends is sure to suck you in.

The Vanderbeekers have always lived in the brownstone on 141st Street. It's practically another member of the family. So when their reclusive, curmudgeonly landlord decides not to renew their lease, the five siblings have 11 days to do whatever it takes to stay in their beloved home and convince the dreaded Beiderman just how wonderful they are. And all is fair in love and war when it comes to keeping their home. A modern classic in the making reminiscent of the Penderwicks series.

Meet Stella Batts. She is eight-years old and she loves to write. She loves to write lists; like her favorite things and kids in her class. And she's writing her autobiography. Stella's favorite color is yellow and she LOVES fudge. As a matter of fact, there is a special fudge counter at her family's candy store because fudge is one of her favorite things to eat! But Stella has just one problem - her name. A boy from her class keeps calling her 'Smella' after she trips on their class nature walk.

Viva Durant, New Orleans’ youngest detective, is on a quest to solve a jazzy mystery. Every summer, Viva heads to New Orleans to spend time with her loving but stern Grandmother, known as Gram. After Gram reads Viva an article in the local paper about a missing treasure related to the world-famous song, “Miss Mary Mack”, Viva heads through the Crescent City on an epic adventure to track down the treasure. The clues lead Viva to the French Quarter, a jazz club, a creepy cemetery, and even the circus.

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.