Olive Cobin Zang has . . . issues. And they mostly aren’t her fault. (No, really!) Though she often slips under the radar, problems have a knack for finding her. So, imagine her doubts when she’s suddenly dropped off at the strangest boarding school ever: a former castle turned prison that's now a “reforming arts school”!

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.

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.

Dexter Foreman is twelve going on eighty. He has lived at The Pines retirement village with his grandmother since he was six years old, and as a result he gets along better with senior citizens than kids his own age. He's homeschooled by the residents up until the day the county’s truancy officer shows up and announces that Dex has to go to a “real” school, to the local middle school. At school, Dex sticks out like a sore thumb. He dresses like a grandpa (and can be just as cranky). His taste in movies and music is decades out of date.

It’s the summer before fifth grade, and for Ferris Wilkey, it is a summer of sheer pandemonium: Her little sister, Pinky, has vowed to become an outlaw. Uncle Ted has left Aunt Shirley and, to Ferris’s mother’s chagrin, is holed up in the Wilkey basement to paint a history of the world. And Charisse, Ferris’s grandmother, has started seeing a ghost at the threshold of her room, which seems like an alarming omen given that she is also feeling unwell. But the ghost is not there to usher Charisse to the Great Beyond. Rather, she has other plans—wild, impractical, illuminating plans.

The day that Christopher saved a drowning baby griffin from a hidden lake would change his life forever. It’s the day he learned about the Archipelago—a cluster of unmapped islands where magical creatures of every kind have thrived for thousands of years, until now. And it’s the day he met Mal—a girl on the run, in desperate need of his help. Mal and Christopher embark on a wild adventure, racing from island to island, searching for someone who can explain why the magic is fading and why magical creatures are suddenly dying.

Finn Connelly is nothing like his dad, a star athlete and firefighter hero who always ran toward danger until he died two years ago. Finn is about to fail seventh grade and has never made headlines . . . until now. Caught on camera vandalizing a cemetery, he's in big trouble for knocking down some dead old lady's headstone. Turns out that grave belongs to a legendary local mountain climber, and her daughter makes Finn an unusual offer: she'll drop all the charges if he agrees to climb all forty-six Adirondack High Peaks in a single summer.

When a herd of elephants interrupts the big Friday night football game, the police enlist Teddy and his father to assist them in getting the animals safely back home to the elephant sanctuary. Only when they arrive, their owners realize one of the elephants has gone missing! The lone African elephant, Tanzy, is still out there somewhere.

Jason Yao has a secret . . . actually, lots of secrets! For one thing, it's hard being a professional chef, helping to run a motel, and being a regular kid! And now that Mia Tang is officially his girlfriend, Jason's life has reached a whole new level of exciting—and terrifying! After all, Mia is amazing, and Jason is . . . just Jason. But he's determined to be the best boyfriend ever, and he knows exactly what he needs to do.

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.

Summer, 1940. Nineteen-year-old Jakob Novis and his quirky younger sister Lizzie share a love of riddles and puzzles. And now they’re living inside of one. The quarrelsome siblings find themselves amidst one of the greatest secrets of World War II—Britain’s eccentric codebreaking factory at Bletchley Park. As Jakob joins Bletchley’s top minds to crack the Nazi's Enigma cipher, fourteen-year-old Lizzie embarks on a mission to solve the mysterious disappearance of their mother.

Tim is just a peasant, but he dreams big. He wants more out of life than to grow up to be a woodsman like his father. Unfortunately, the only route to success in the kingdom of Wyld is to be born a prince. Still, Tim is determined. He is brave and clever and always tries to do the right thing—even though he rarely gets the credit for it.

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.

Becca Singer is having the Worst Day Ever. Her best friend, Harper, dumped her, and Becca is totally friendless and alone. Then the box arrives in the mail. Inside the box? One bracelet, plus a mysterious note telling Becca to make a wish. So Becca puts on the bracelet—why not, right?—and wishes to have friends. Lots of friends. So many friends. And just like that, the magic works. Suddenly, EVERYONE wants to be Becca's BFF, from all the kids at school to the teachers (!) to her own mom (!!).

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!