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.

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.

Teddy Fitzroy's back for another zoo mystery this time it's a koala caper in this action-packed follow-up to Belly Up, which Kirkus Reviews called great fun. School troublemaker Vance Jessup thinks Teddy Fitzroy's home at Fun Jungle, a state-of-the-art zoo and theme park, is the perfect place for a cruel prank. Vance bullies Teddy into his scheme, but the plan goes terribly awry. Teddy sneaks into the koala exhibit to hide out until the chaos dies down.

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.

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.

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.

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 Lark Heron-Finch is steeling herself to spend the summer on Swallowtail Island off the shores of Lake Erie. It’s the first time that she and her sister will have seen the old house since their mom passed away. And while her stepfather and his boys are okay, the island’s always been full of happy memories—and now everything is different. When Nadine, a close family friend, tells Lark about a tragic boat accident that happened off the coast many years before, Lark's enthralled with the story.

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".

Two years ago, Julia lost her family in a tragic accident. Her husband drowned trying to save their daughter, Lily, in the river near their rural home. But the little girl’s body was never found—and Julia believes Lily is somehow still alive. Alone and broke, Julia opens her house as a writers’ retreat. One of the first guests is Lucas, a horror novelist, who becomes obsessed with finding out what happened to Lily.

How come nobody ever sees Miranda Ogilvy - except one smoking-hot neighbor and one stone cold killer? The tiny village called “Minokee” (Seminole for “alligators all over the place”) is chock full of mysteries like that, and like: Who is the hunky neighbor, Shepard Krausse, how in heck did he find the invisible Miranda, and why does such a nice guy have such deadly enemies? Who killed Miranda’s Aunt Phyllis? Is Shepard’s guide dog, Dave, really the smartest guy in town? Why does old Miz Cleary keep a loaded rifle beside her front porch rocking chair?

The recently orphaned Sisters Grimm find out from their Granny, who they thought was dead, that they're descendents of the legendary Brothers Grimm. Now they must take over the family responsibility of being fairy tale detectives in a town where fairy tales are real. Their first case: a giant is destroying the town and it may have something to do with a boy named Jack and a certain famous beanstalk.

Tucked away in the rolling hills of rural western Virginia lies the storybook resort of Storyton Hall, catering to book lovers who want to get away from it all. To increase her number of bookings, resort manager Jane Steward has decided to host a Murder and Mayhem week so that fans of the mystery genre can gather together for some role-playing and fantasy crime solving.

Sam Rockwell came home from the Second World War to work as a fledgling private investigator specializing in helping "Returns": recently deceased ghosts who've come back with unfinished business. Short on experience and long on the imitated swagger of the detectives found in his dog-eared collection of pulp fiction P.I. mysteries, the quick-witted Sam waits for his big break - and his chance to win the heart of Amelia, his Girl Friday. But when his no-nonsense father is murdered and becomes a Return himself, everything changes.

Will Everett has always wished for an adventure. Little does he know his adventure starts the moment he boards the Boundless. There is a murder, and now Will protects a key that can unlock the train¹s hidden treasures. Villains are fast on his heels and strange creatures are lurking outside the windows, as the Boundless hurtles across the country. Together with Maren, a gifted escape artist, and Mr. Dorian, a circus ringmaster with amazing abilities, Will must save the Boundless before someone else winds up dead.