"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.

Heather and Picket are extraordinary rabbits with ordinary lives until calamitous events overtake them, spilling them into a cauldron of misadventures. They discover that their own story is bound up in the tumult threatening to overwhelm the wider world.

The mice of Brambly Hedge have many adventures but they always have time for fun too. All through the year, they mark the seasons with feasts and festivities and, of course, the mice never miss an opportunity to meet and celebrate. This collection contains four classic stories following their adventures throughout the year.

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!

From the New York Times best-selling creator of the Vanderbeekers series comes a triumphant tale of friendship, healing, and the power of believing in ourselves told from the perspective of biracial sixth-graders June and Tyrell, two children living in a homeless shelter. As their friendship grows over a shared love of classical music, June and Tyrell confront a new housing policy that puts homeless families in danger.

The four Melendy children live with their father and Cuffy, their beloved housekeeper, in a worn but comfortable brownstone in New York City. There's thirteen-year-old Mona, who has decided to become an actress; twelve-year-old mischievous Rush; ten-year-old Randy who loves to dance and paint; and thoughtful Oliver, who is just six-years-old.

For Hart Evans, being the most popular fifth grader has its advantages: kids look up to him and teachers let him get away with everything. But during one choir practice, Hart zones out too far, accidentally flinging a rubber band at his teacher. Mr. Meinert realizes that if Hart is ever going to discover his musical potential, his punishment must march to a different drummer.

Eleven-year-old Nikolas - nicknamed "Christmas" - has received only one toy in his life: a doll carved out of a turnip. But he's happy with his turnip doll, because it came from his parents, who love him. Then one day his father goes missing, and Nikolas must travel to the North Pole to save him. Along the way Nikolas befriends a surly reindeer, bests a troublesome troll, and discovers a hidden world of enchantment in the frozen village of Elfhelm.

It's the turn of the 20th century in New York's Lower East Side and a sense of adventure and excitement abounds for five young sisters. Follow along on their adventures and experience their holiday fun.

Alex and Conner Bailey's world is about to change in this fast-paced adventure that uniquely combines our modern day world with the enchanting realm of classic fairy tales. The Land of Stories tells the tale of twins Alex and Conner. Through the mysterious powers of a cherished book of stories, they leave their world behind and find themselves in a foreign land full of wonder and magic where they come face-to-face with fairy tale characters they grew up reading about.

Before they were the Boxcar Children, Henry, Jessie, Violet, and Benny Alden lived with their parents on Fair Meadow Farm. Although times are hard, the Aldens are happy - “the best family of all,” Mama likes to say. One day, a blizzard hits the countryside, and a traveling family needs shelter. The Aldens take them in, and the strangers soon become friends. But things never stay the same at the farm, and the spring and summer bring events that will forever change their lives.

Mrs. Piggle-Wiggle has gone away unexpectedly and left her niece, Missy Piggle-Wiggle, in charge of the Upside-Down House and the beloved animals who live there: Lester the pig, Wag the dog, and Penelope the parrot, among others. Families in town soon realize that like her great-aunt, Missy Piggle-Wiggle has inventive cures for all sorts of childhood (mis)behavior: The Whatever Cure and the Just-a-Minute Cure, for instance. What is a stressed out parent to do? Why, call Missy Piggle-Wiggle, of course!

Tuesdays at Castle Glower are Princess Celie's favorite days. That's because on Tuesdays, the castle adds a new room, a turret, or sometimes even an entire wing. No one ever knows what the castle will do next, and no one - other than Celie, that is - takes the time to map out the new additions. But when King and Queen Glower are ambushed and their fate is unknown, it's up to Celie, with her secret knowledge of the castle's never-ending twists and turns, to protect their home and save their kingdom.

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.

Things to know about Billy Miller: He's worried about second grade; he thinks bats are cool; his little sister is annoying; he had a spectacular accident this summer; he doesn't like poetry much; his dad makes really good cookies; Ned is his best friend; his mom likes rainy days; he thinks Emma Sparks is a pain; he can run really fast; this is his year.

Jeremy Fink has big plans for this summer with his best friend Lizzy, a notorious troublemaker (and no, he does not have a secret crush on her). He has everything he needs within a few blocks of his home, so he never has to leave his little neighborhood. And this summer, he officially becomes a teenager.

When you're the third of six kids, it's easy to get lost in the shuffle, but Sunday Fowler is determined that this summer she'll find the one thing that makes her stand out from her siblings. And when she discovers a silver box in the basement of the library her parents are renovating, she might just have found something to gain her the attention she so craves. Inside is a series of letters addressed to "The Librarian" and a manuscript. But who wrote them?

Melanie McLaughlin desperately wants to adopt two orphaned siblings and give them a real home for Christmas. A just-for-the-holiday marriage to Bryce Landry fits her plan perfectly...until unexpected sparks have Melanie dreaming of forever by his side....

Mrs. Piggle-Wiggle has gone away unexpectedly and left her niece, Missy Piggle-Wiggle, in charge of the Upside-Down House and the beloved animals who live there: Lester the pig, Wag the dog, and Penelope the parrot, among others. Families in town soon realize that like her great-aunt, Missy Piggle-Wiggle has inventive cures for all sorts of childhood (mis)behavior: The Whatever Cure and the Just-a-Minute Cure, for instance. What is a stressed out parent to do? Why, call Missy Piggle-Wiggle, of course!

An unsent letter in a first-edition copy of Charlotte's Web leads to a hunt for treasure in this heartwarming middle-grade mystery from the author of The Mother-Daughter Book Club. Now that Truly Lovejoy's father has been injured by an IED in Afghanistan and is having trouble finding work back home, the family moves from Texas to tiny Pumpkin Falls, New Hampshire, to take over Lovejoy's Books, a struggling bookstore that's been in the family for 100 years.

Amina has never been comfortable in the spotlight. She is happy just hanging out with her best friend, Soojin. Except now that she's in middle school everything feels different. Soojin is suddenly hanging out with Emily, one of the "cool" girls in the class, and even talking about changing her name to something more "American." Does Amina need to start changing too? Or hiding who she is to fit in? While Amina grapples with these questions, she is devastated when her local mosque is vandalized.

Emmy was a good girl—too good, perhaps. The rat, whose cage sat on the counter next to Emmy’s desk, was not so good. On the other hand, he was the only one in Emmy’s class who would talk to her. The rest of the kids barely knew she existed. Even her teacher didn’t seem to know she was there! Only her nanny, the lovely-but-sinister Miss Barmy, really pays her much attention.

When Abbey’s best friend, Kristen, vanishes at the bridge near Sleepy Hollow Cemetery, everyone else is all too quick to accept that Kristen is dead, and rumors fly that her death was no accident. Abbey goes through the motions of mourning her best friend, but privately, she refuses to believe that Kristen is really gone. Then she meets Caspian, the gorgeous and mysterious boy who shows up out of nowhere at Kristen’s funeral, and who keeps reappearing in Abbey’s life. Caspian clearly has secrets of his own, but he’s the only person who makes Abbey feel normal again.

The book club is about to get a makeover. Even if Megan would rather be at the mall, Cassidy is late for hockey practice, Emma's already read every book in existence, and Jess is missing her mother too much to care, the new book club is scheduled to meet every month. But what begins as a mom-imposed ritual of reading Little Women soon helps four unlikely friends navigate the drama of middle school.

You're going to fall in love with My True Love Gave to Me: Twelve Holiday Stories by twelve bestselling young adult writers, edited by the international bestselling Stephanie Perkins. Whether you celebrate Christmas or Hanukkah, Winter Solstice or Kwanzaa, there's something here for everyone. So curl up by the fireplace and get cozy. You have twelve reasons this season to stay indoors and fall in love.

Molly Ayer has been in foster care since she was eight years old. Most of the time, Molly knows it's her attitude that's the problem, but after being shipped from one family to another, she's had her fair share of adults treating her like an inconvenience. So when Molly's forced to help an elderly woman clean out her attic for community service, Molly is wary. Just another adult to treat her like a troublemaker.

Few can compete with the Natasha Smith when it comes to entertaining, but her childhood rival, Sophie Winston, certainly tries. While Natasha is known for her intricate centerpieces and painstakingly prepared gourmet meals, Sophie likes to keep things simple...real simple.

How do you let go of something you've never had? Junior year for Brooke Winters is supposed to be about change. She's transferring schools, starting fresh, and making plans for college so she can finally leave her hometown, her family, and her past behind. But all of her dreams are shattered one hot summer afternoon when her mother is arrested for killing Brooke's abusive father. No one really knows what happened that day, if it was premeditated or self-defense, whether it was right or wrong. And now Brooke and her siblings are on their own.

Stopping a tornado was the first of many strange events that seem to follow Weylyn from town to town, although he doesn't like to take credit. As amazing as these powers may appear, they tend to manifest themselves at inopportune times and places. From freak storms to trees that appear to grow over night, Weylyn's unique abilities are a curiosity at best and at worst, a danger to himself and the woman he loves. But Mary doesn't care.

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.

This summer the Penderwick sisters have a wonderful surprise: a holiday on the grounds of a beautiful estate called Arundel. Soon they are busy discovering the summertime magic of Arundel's sprawling gardens, treasure-filled attic, tame rabbits, and the cook who makes the best gingerbread in Massachusetts. But the best discovery of all is Jeffrey Tifton, son of Arundel's owner, who quickly proves to be the perfect companion for their adventures.

It is 1940 and William, 12, Edmund, 11, and Anna, nine, aren't terribly upset by the death of the not-so-grandmotherly grandmother who has taken care of them since their parents died. But the children do need a guardian, and in the dark days of World War II London, those are in short supply, especially if they hope to stay together. Could the mass wartime evacuation of children from London to the countryside be the answer?

A young girl delights in her grandmother's stories of days gone by. Sparked by keepsakes and simple questions, Grandma shares marvelous stories of mischief, discovery, and laughter, such as the time she accidentally lost the family buggy.

No one would accuse 11-year-old Caddie Woodlawn of being dainty and ladylike. In spite of her mother’s best efforts, Caddie is as wild as the wind, playing freely and rambunctiously with her two brothers in the Wisconsin backwoods. There are rafts to build and trees to climb and pranks to play. Caddie especially likes to watch her friend Indian John build birchbark canoes at the river. Every day seems wide with possibility - as wide as the frontier. But living on the edge of civilization has its risks, too....

The four Melendy children live with their father and Cuffy, their beloved housekeeper, in a worn but comfortable brownstone in New York City. There's thirteen-year-old Mona, who has decided to become an actress; twelve-year-old mischievous Rush; ten-year-old Randy who loves to dance and paint; and thoughtful Oliver, who is just six-years-old.

Eleven-year-old Alex Petroski loves space and rockets, his mom, his brother, and his dog, Carl Sagan - named for his hero, the real-life astronomer. All he wants is to launch his golden iPod into space the way Carl Sagan (the man, not the dog) launched his Golden Record on the Voyager spacecraft in 1977. From Colorado to New Mexico, Las Vegas to LA, Alex records a journey on his iPod to show other lifeforms what life on Earth, his Earth, is like.

From the New York Times best-selling creator of the Vanderbeekers series comes a triumphant tale of friendship, healing, and the power of believing in ourselves told from the perspective of biracial sixth-graders June and Tyrell, two children living in a homeless shelter. As their friendship grows over a shared love of classical music, June and Tyrell confront a new housing policy that puts homeless families in danger.

Mrs. Frisby, a widowed mouse with four small children, is faced with a terrible problem. She must move her family to their summer quarters immediately, or face almost certain death. But her youngest son, Timothy, lies ill with pneumonia and must not be moved. Fortunately, she encounters the rats of NIMH, an extraordinary breed of highly intelligent creatures, who come up with a brilliant solution to her dilemma.

Corinne La Mer isn't afraid of anything. Not scorpions, not the boys who tease her, and certainly not jumbies. They're just tricksters parents make up to frighten their children. Then one night Corinne chases an agouti all the way into the forbidden forest. Those shining, yellow eyes that followed her to the edge of the trees, they couldn't belong to a jumbie. Or could they?