When Stella and her younger brother, Tom, move to their new London home, they become mystified by the disappearances of Harry, their elderly neighbor's small dog. Where does he go? And why does he keep reappearing wet-through? Their quest to solve the riddle over the summer holidays leads to a boat buried under a grassy mound, and a tunnel that takes them to a secret lake.

This box set includes the first three books in The Virginia Mysteries series!

12-year-old Aidan Errolson, comes from a long line of adventurers. His grandparents were among the first settlers of Corenwald's Eastern Frontier. His father had been one of the kingdom's greatest warriors. Aidan, on the other hand, lives the quiet, comfortable life, of a nobleman's son. He never has any real adventures, and that, he believes, is the one great injustice of his otherwise happy life. All that will change the day he first hears the bark of the bog owl, and meets Dobro Turtlebane.

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.

Jake and Taylor Wilder have been taking care of themselves for a long time. Their father abandoned the family years ago, and their mother is too busy working and running interference between the boys and her boyfriend, Bull, to spend a lot of time with them. Thirteen-year-old Jake spends most of his time reading. He pores over his father's journal, which is full of wilderness facts and survival tips. Eleven-year-old Taylor likes to be outside playing with their dog, Cody, or joking around with the other kids in the neighborhood. But one night everything changes.

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.

When an oil spill takes place off the coast of Connecticut, the Aldens are happy to volunteer to help clean up the animals affected, including a rare species of shore bird. But could more have been done to prevent the spill? As the Aldens take up the case, it leads them on an adventure to help other endangered animals around the world.

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.

Something is not right in Bayport. After a series of unfortunate (yet harmless) pranks, it looks like Frank and Joe have caught their suspect surprisingly early. Their classmate, Seth Diller, has taken his love of filmmaking a bit too far. But shortly after Frank and Joe confront Seth, there are fresh outbreaks of Seth-like pranks. Except these aren't as harmless. After a bit of investigating, the Hardy Boys uncover evidence of the Red Arrow - a group that will stop at nothing to bring chaos and crime to Bayport's peaceful existence.

Henry, Jessie, Violet, and Benny didn't think the old trunk in their house held anything interesting. But an unusual statue they find inside leads them to the Reddimus Society, a secret guild dedicated to returning lost treasures to where they belong. Now the Aldens must help their new friends by traveling across the country with the statue and six mysterious boxes! Can the Boxcar Children keep these seven treasures out of the wrong hands?

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?

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.

Ten-year-old George Calder can't believe his luck - he and his little sister, Phoebe, are on the famous Titanic, crossing the ocean with their aunt Daisy. The ship is full of exciting places to explore, but when George ventures into the first-class storage cabin, a terrible boom shakes the entire boat. Suddenly water is everywhere, and George's life changes forever.

Cruz Coronado leaves his tranquil home in Hawaii to join 23 talented kids from around the globe to train at the Explorer Academy with the world's leading scientists to become the next generation of great explorers. But for Cruz, there's more at stake. No sooner has he arrived at the Academy than he discovers that his family has a mysterious past with the organization that could jeopardize his future. In the midst of codebreaking and cool classes, new friends, and augmented reality expeditions, Cruz must tackle the biggest question of all: Who is out to get him, and why?

"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.

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.

Twelve-year-old Isaiah Rawlings wished for only one thing this summer, a camping trip outside of Kentucky. I’m so tired of camping in my backyard, he groaned. Isaiah pleads with his parents to reconsider their usual summer trip to dusty old museums and big cities.

Mike Nawrocki, cocreator of VeggieTales, is back! In the first installment of this hilarious new chapter-book series, 10-year-old Michael and his friend Justin sneak into the Dead Sea caves near the archaeological dig where Michael’s dad is working. Michael finds two 2,000-year-old squirrels petrified in sea salt. Hijinks ensue as Michael tries to bring them back to the US, hidden in his backpack. What Michael thinks are just cool souvenirs may turn out to be something much more!

Eleven-year-old Lydia Green doesn’t want anything to change. She lives happily in Mulberry Glen with her mismatched family of a fairy guardian, a philosopher, and twin troublemakers known as the Zs. But now, rumors swirl about The Darkness, a powerful force that dwells in the forest Tenebrae. Lydia knows The Darkness is nothing to be trifled with, but when a foolish choice by the Zs puts her family in danger, she must leave home and face the strange magical world of The Valleylands.

Ten-year-old George Calder can't believe his luck - he and his little sister, Phoebe, are on the famous Titanic, crossing the ocean with their aunt Daisy. The ship is full of exciting places to explore, but when George ventures into the first-class storage cabin, a terrible boom shakes the entire boat. Suddenly water is everywhere, and George's life changes forever.

America's national parks spring from an idea as radical as the Declaration of Independence: that the nation's most magnificent and sacred places should be preserved, not for royalty or the rich, but for everyone. In this evocative narrative, Ken Burns and Dayton Duncan delve into the history of the park idea.

"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.

In the first adventure in the series, Peter and Mary find themselves witnesses to the creation of the world just as God is speaking it into existence. Can they unlock the mystery of the scrolls before they get trapped in history forever? Children will discover the answer as the two characters ride rhinos, meet the angel Michael, and talk to a certain snake in the Garden of Eden.

Mystery Ranch: The Aldens visit their mysterious Aunt Jane at her run-down ranch and make a surprising discovery! Mike's Mystery: A nearby house burns down while the Boxcar Children are staying with their Aunt Jane - and their friend Mike is blamed for starting the fire! Blue Bay Mystery: The Aldens are excited to visit a deserted South Seas island. But soon they discover clues that they are not alone. Is someone on the island watching them?

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.

The Boxcar Children: Henry, Jessie, Violet, and Benny are orphans. Can they find a home where they can stay together as a family? Surprise Island: The Aldens spend the summer on their own private island. There they meet a new friend with an amazing secret! The Yellow House Mystery: Years ago, a man vanished from the yellow house on Surprise Island. Why? The Aldens have found a clue to the mystery!

Peter Nimble and His Fantastic Eyes is the utterly beguiling tale of a ten-year-old blind orphan who has been forced into a life of crime. One fateful afternoon, Peter steals a mysterious box that contains three magical pairs of eyes. When he tries the first pair, he is instantly transported to a hidden island where he is presented with a special quest: to travel beyond the known world and rescue a lost kingdom from its treacherous ruler....

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".

This hilarious, heartfelt, and soaring adventure will delight fans of The Goonies and Indiana Jones. Performed as a 1930s radio drama, it’s bursting with humor for all ages, orchestral scoring, and some of the most talented voices on Broadway. When their ace pilot parents (and adorable puppy) mysteriously disappear over the Pacific, the Flamingo Sisters - Flo, Faye, and Franny - escape the clutches of their evil Uncle Freidrich (who believes girls should never pilot aeroplanes) and join a flying circus.

Hardly a day passes without Trille and Lena inventing some kind of adventure that often ends in trouble. Whether it's coaxing a cow onto a boat or tobogganing down the steepest and iciest hill with a chicken, there is always a thrill - and sometimes an injury - to be had. Trille loves to share everything with Lena, even Auntie Granny's waffles, which make everything just perfect. But when Lena has to move away, and Auntie Granny leaves the world, it sometimes seems nothing will ever be right again.