"Thrilling and delightful!"—Pseudonymous Bosch, New York Times bestselling author The Navel Twins are at it again, for the fourth and final time! This time their travels take them to the North Pole where they are forced to sky dive, go dog sledding, get rescued by a man in a hot air balloon who looks vaguely like Santa, and finally find the long-lost Library of Alexandria. If they can get through that, they might have a fighting chance at finally going back to being couch potatoes. But that's a tall order for the world's most unenthusiastic siblings.

Man's best friend goes to war.Chuck and Ajax are partners, and they're good at their job. Chuck leads Ajax through the jungles of Vietnam, and Ajax sniffs out hidden, deadly traps before they can hurt US soldiers.The war is almost over now, and the Army is grateful for Chuck's service. They want to give him a medal. But their plans for Ajax are less noble.Suddenly, Chuck is forced to answer two impossible questions: Is his loyalty to Ajax or to the US Army? And just how far is he willing to go to protect his partner?DOG TAGS is a series of stand-alone books, each exploring the bond between soldier and dog in times of war.

Man's best friend goes to war.Two enemy soldiers. One uneasy alliance.Miguel is a medic in the US Army. Stationed in a remote Belgian forest during World War II, he's expecting a quiet tour of duty. But the Nazis have other ideas. They launch a surprise attack . . . one that separates Miguel from his entire division.Alone and lost in enemy territory, Miguel discovers an abandoned dog, left behind by German forces. The dog could be just the ally Miguel needs to get out of the forest alive. There's a catch, though. The dog has been trained by the Nazis to see Miguel as the enemy. Can a young soldier teach an old dog new tricks?DOG TAGS is a series of stand-alone books, each exploring the bond between soldier and dog in times of war.

Based on a real military program! The US Navy's new breed of soldier is ready to make a big splash.From the author of Dog Tags!Navy SEALs are some of the most elite warriors in the world. Trained to operate in sea, land, and air, they work under cover of night to carry out the US military's most sensitive and difficult missions. Cory McNab wanted to be a Navy SEAL, but he washed out of the program. Now he is a member of the Navy's Marine Mammals Program, where he is partnered with a search-and-recovery dolphin named Kaj.Together, Cory and Kaj are the Navy's best hope when a US spy submarine is lost in enemy waters. With the help of Kaj's bio-sonar, they should be able to locate the submarine before its secrets fall into the wrong hands. But the mission gets complicated when a team of Navy SEALs runs into trouble. Can Cory succeed where his heroes have failed . . . or is he in too deep?

Eleven-year-old twins Oliver and Celia Navel could care less about adventure and they really do not like excitement. They'd rather be watching television. Unfortunately for them, their thrill-seeking parents have dragged them from continent to continent their entire lives. But when their mother goes missing and their father makes a bet with the devious explorer Sir Edmund, the twins are forced into action. They head to Tibet where they fall out of airplanes, battle Yetis, poison witches, and encounter one very large yak. If they can unravel the mysteries and outwit Sir Edmund, they might just make the discovery of a lifetime . . . and get cable television!

Never turn your back on the Cahills . . . The most powerful family history has ever known returns with a vengeance in The 39 Clues: Doublecross! The Cahills are the world's most powerful family, but their strength is being tested. A sinister man calling himself "The Outcast" has targeted the family and set them an impossible test. He's recreating four of history's worst disasters and challenging the young Cahills to find and stop the tragedies before it's too late. Now, with one disaster behind them, siblings Dan and Amy Cahill and their friends have just days to discover what the Outcast's next move will be. Their frantic search seems to be pointing toward a terrifying air disaster, the explosion of the Hindenburg airship. But no one travels by airship anymore — what do the Outcast's cryptic messages mean? The young Cahills must split up and take to the skies to try to find the answer . . . before their whole world comes crashing down.

A thrilling new adventure in the Wild Ones series—perfect for fans of Warriors, Spirit Animals, and Redwall!The wild animals of Ankle Snap Alley have been disappearing, and Kit knows exactly why: The People are animal-napping them and taking them to the zoo! Not only that, but they are at the very same zoo where Kit's mother is being held captive. So Kit decides to round up the Moonlight Brigade and lead the charge to set the Wild Ones free.But this rescue mission might be his most difficult one yet. The Flealess and some of the zoo animals have teamed up against Kit—and the Rat King brings warnings of coming danger! Will Kit be able to set his friends and family free? In the newest installment in the Wild Ones saga, Kit must demonstrate, once and for all, that he has the smarts and the sneakiness to win the day.Praise for The Wild Ones:"Raccoon hero Kit and his ragtag community of creatures will sneak their way into your...

Man's best friend goes to war.LOYALTY ABOVE ALL ELSE.Andrew believes in the importance of loyalty. He is loyal to his family. He is loyal to his hound dog, Dash. And he is loyal to his country, the Confederate States of America.Although he's too young to join the Confederate Army, Andrew is welcomed into the Home Guard, a group of men who track down deserters and runaways. He and Dash make a great team. But hunting people is very different from hunting raccoons. And soon Andrew's loyalty will be tested like never before.Dog Tags is a series of stand-alone books, each exploring the bond between soldier and dog in times of war.

Oliver and Celia Navel have suffered through a whole summer exploring with their father's nemesis Sir Edmund, and are ready to begin a new school year glued to the TV. But when their mother vanishes (again) in search of the Lost City of Gold: El Dorado, the twins must trek from the ruins of ancient temples through the shadowy forests of the Amazon. This time, they'll need all their reality TV survival skills to brave raging river rapids, furious fire ants, and a most unusual jungle feast. Worst of all, if they can't outsmart the bad guys, they're going to miss all their favorite television shows!

The new animal-fantasy/adventure series for fans of Warriors, Spirit Animals, and Redwall!Kit may have saved the Wild Ones from the Flealess, but he and his neighbors are not out of danger yet. Coyote has taken charge of the Thunder River Rompers, a notorious gang of nearsighted otters, and he has his sights set on Ankle Snap Alley. When, on the eve of the First Frost, Coyote and his henchmen steal all of the seeds and nuts that the Alley's residents have stored up for winter, Kit knows that he can't sit by and do nothing. As he tries to fulfill his school assignments and win himself a coveted invitation into the Moonlight Brigade, Kit knows he must outsmart the Coyote so that his fellow Wild Ones can survive the winter. With so much depending on him, it's time for Kit to pull off his greatest trick yet and save the community he now calls home. Howl to snap!Praise for The Wild Ones:"Raccoon hero Kit and his ragtag community of creatures...

When a country raccoon used to a soft life winds up all alone in the big city, there's no telling what he'll do to survive — and to save his fellow wild animals in the process. Kit, a young raccoon, has lived his whole life under the Big Sky in the comfort of his parents' burrow. But when a pack of hunting dogs destroy his home and kill his parents, Kit finds himself in Ankle Snap Alley, a city in the midst of a turf war between the Wild Ones and the people's pets who call themselves The Flealess. There he follows the clues his parents left behind to uncover the secret that they died for–the existence of an ancient truce that gives Ankle Snap Alley to the Wild Ones. But The Flealess will stop at nothing to keep that secret buried forever–and Kit is in serious danger. Perfect for fans of the Warriors, Spirit Animals, or Redwall series, this first book in the Wild Ones epic is sure capture young readers' imaginations and take them on a...

If Oliver and Celia Navel had any hopes this year would be less life-threatening than the last, their hopes are quickly shattered...along with their television set. When a strange scientist warns them that their mother is—yet again—in peril, it's off to the Pacific Ocean they go. But navigating stormy seas proves easy compared to tackling a Kraken—an enormous squid—and the twins think they might have bitten off more than they can chew. In their quest for Atlantis, Oliver and Celia are in the worst trouble of their young lives; and survival comes down to one seemingly impossible task: giving a squid a wedgie.