You know about the invasion of Earth, and the Garde who will do anything to stop it. Yet there is still so much to learn. The stories in Zero Hour will help you get the answers you seek, but only the Garde and their allies can save our planet.

Entire cities disappeared in the blink of an eye, leaving nothing but dust and rubble. When an alien race came to make Earth theirs, they brought with them a weapon we had no way to fight, a universe-altering force known as thelemity. It seemed nothing could stop it - until we discovered we could wield the power, too. Five hundred years later, the Earth is locked in a grinding war of attrition. The talented few capable of bending thelemity to their will are trained in elite military academies, destined for the front lines.

The globe-trotting thief in the red fedora returns! And now, the question isn't where—but who? In the role of Carmen Sandiego, award-winning performer Kyla Garcia reveals, for the very first time, the backstory of the ever-elusive master criminal whose whereabouts captured the imaginations of children everywhere—through educational video games, animated series, and a popular PBS "gameshow" for middle schoolers in the 1990s.

In the 20th century Earth sent probes, transmissions, and welcoming messages to the stars. Unfortunately, someone noticed. The Galactics arrived with their battle fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined their vast Empire. Swearing allegiance to our distant alien overlords wasn't the only requirement for survival. We also had to have something of value to trade, something that neighboring planets would pay their hard-earned credits to buy. As most of the local worlds were too civilized to have a proper army, the only valuable service Earth could provide came in the form of soldiers....

New York Times best-selling author Gordon Korman harkens back to his No More Dead Dogs days in this stand-alone that takes a tone more serious than you've ever heard from him before. A boy who's been a bully and hanging out with the wrong friends gets a new start after a memory-loss-inducing accident. But can someone really change who he is, or will the old him merely come back over time?

Sammy, a 14-year-old fugitive, accidentally discovers he has the powers of a Psion. Plucked off the streets, he is thrust into the rigorously disciplined environment of Psion Beta headquarters. As a new Beta, Sammy must hone his newfound abilities using holographic fighting simulations, stealth training missions, and complex war games. His fellow trainees are other kids competing to prove their worth so they can graduate and contribute to the war effort.

Kris Longknife is a daughter of privilege, born to money and power. Her father is the prime minister of her home planet, her mother the consummate politician's wife. She's been raised only to be beautiful and marry well. But the heritage of the military Longknifes courses through Kris' blood - and, against her parents' objections, she enlists in the Marines.

The Earth had four fleets to fight the invading enemy. The first fleet valiantly protected earth, but it wasn’t enough. Three fleets would arrive soon and end the threat...but they never came through the wormhole. One ship escaped the massacre, fleeing deep into space while the rest of Earth’s defenses were destroyed. Only the barrier around the planet keeps the enemy from finishing what they started.

Kurt is a talented but emotionally damaged football player. Danny is a rising star on the gymnastics team, an outsider in a high school where the football team rules. But the two form an unlikely friendship, and when one member of the gym team is viciously assaulted by the quarterback and his cronies, Kurt rises to his defense and challenges the entrenched stereotypes of high-school sports. This is that rare book that authentically captures the voices, fierce loyalties, and harsh justice of teenage boys.

Life is boring when you live in the real world instead of starring in your own book series. Owen knows that better than anyone, what with the real world's homework and chores. But everything changes the day Owen sees the impossible happen - his classmate Bethany climbs out of a book in the library. It turns out Bethany's half fictional and has been searching every book she can find for her missing father, a fictional character.

Imagine a school in the year 2074 where students don't read history, but watch it happen around them; where running in gym class isn't around a track, but up a virtual mountain; and where learning about animals means becoming one through an avatar. Welcome to Cragbridge Hall, the most advanced and prestigious school in the world. Twins Abby and Derick Cragbridge are excited as new students to use their famed grandfather's inventions that make Cragbridge Hall so incredible.

In middle school, words aren't just words. They can be weapons. They can be gifts. The right words can win you friends or make you enemies. They can come back to haunt you. Sometimes they can change things forever. When cell phones are banned at Branton Middle School, Frost and his friends Deedee, Wolf, and Bench come up with a new way to communicate: leaving sticky notes for each other all around the school. It catches on, and soon all the kids in school are leaving notes - though for every kind and friendly one, there is a cutting and cruel one as well.

Funny girl Harley Quinn loves fighting crime with her classmates like Wonder Woman, Batgirl, and Supergirl, but she always does it her with own madcap style - and a big mallet! It's no surprise that Harley can't resist getting involved in a dance competition and organizing an outrageous battle of the bands. But when a high-tech carnival comes to town, Harley knows that things aren't what they seem and that only she can get to the bottom of the mystery - and deliver a great punch line while doing it!

Cole Matthews used to be a violent kid, but a year in exile on a remote Alaskan island has a way of changing your perspective. After being mauled by a Spirit Bear, Cole started to heal. He even invited his victim, Peter Driscal, to join him on the island and they became friends. But now their time in exile is over, and Cole and Peter are heading back to the one place they're not sure they can handle: high school. Gangs and violence haunt the hallways, and Peter's limp and speech impediment make him a natural target.

Fans of Adam Gidwitz and Neil Gaiman will love this middle-grade adventure about two boys, a mysterious, old book with some dark secrets, and a horde of angry demons. Nothing could go wrong, right? When Walter Prairie is struck dead by a bolt of lightning, he's fast-tracked through the Afterlife Academy and assigned as a Guardian Agent to protect a High-Level Target. Walter's HLT, Charlie Dewdle, isn't the most popular kid in school. He's a bit paranormally obsessed. And he has just found an old book that could be used to open the Gateway for demons to wreak havoc on earth.

Imagine a school in the year 2074 where students don't read history, but watch it happen around them; where running in gym class isn't around a track, but up a virtual mountain; and where learning about animals means becoming one through an avatar. Welcome to Cragbridge Hall, the most advanced and prestigious school in the world. Twins Abby and Derick Cragbridge are excited as new students to use their famed grandfather's inventions that make Cragbridge Hall so incredible.

Benson Fisher thought that a scholarship to Maxfield Academy would be the ticket out of his dead-end life. He was wrong. Now he’s trapped in a school that’s surrounded by a razor-wire fence. A school where video cameras monitor his every move. Where there are no adults. Where the kids have split into groups in order to survive. Where breaking the rules equals death. But when Benson stumbles upon the school’s real secret, he realizes that playing by the rules could spell a fate worse than death, and that escape - his only real hope for survival - may be impossible.

Best friends Jeff and Wiley are nickname addicts. It's only when a spunky red-haired environmentalist named Cassandra enters their lives that they begin to doubt their nicknaming prowess. No name seems to say it all. On top of everything, some of the nicknames that Jeff and Wiley have invented are backfiring on them. Will the nicknamers be able to get it together before it's too late?

From the mind of basketball legend and Academy Award-winning storyteller Kobe Bryant comes this radically original portrait of five young basketball players, one enlightening coach, and the awesome transformative power of the game. Filled with insights about the mental stamina and emotional clarity that peak performance requires, this is an indispensable story for young athletes, coaches, educators, and anyone interested in the astonishing potential of team sports to unlock individual growth.

In the 20th century Earth sent probes, transmissions, and welcoming messages to the stars. Unfortunately, someone noticed. The Galactics arrived with their battle fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined their vast Empire. Swearing allegiance to our distant alien overlords wasn't the only requirement for survival. We also had to have something of value to trade, something that neighboring planets would pay their hard-earned credits to buy. As most of the local worlds were too civilized to have a proper army, the only valuable service Earth could provide came in the form of soldiers....

Joey Harker isn't a hero. In fact, he's the kind of guy who gets lost in his own house. But then one day, Joey gets really lost. He walks straight out of his world and into another dimension. Joey's walk between the worlds makes him prey to two terrible forces: armies of magic and science who will do anything to harness his power to travel between dimensions.

Landon Dorch longs to play football, and he is definitely built for the game. Unfortunately two things stand in his way: his mother's worries and the fact that he is deaf. Landon hopes that the family's move to a new town will offer him a fresh start and that he can leave behind the teasing and taunts that marred life at his former school. But his speech problems and his cochlear implants seem to invite bullying. Luckily he is not without help, starting with his loving and quirky family and then a great new friend on the team.

Bobby Pendragon is a seemingly normal 14-year-old boy. He has a family, a home, and even Marley, his beloved dog. But there is something very special about Bobby: he is going to save the world.

And not just Earth as we know it. Bobby is slowly starting to realize that life in the cosmos isn't quite what he thought it was. And before he can object, he is swept off to an alternate dimension known as Denduron, a territory inhabited by strange beings, ruled by a magical tyrant, and plagued by dangerous revolution.

The globe-trotting thief in the red fedora returns! And now, the question isn't where—but who? In the role of Carmen Sandiego, award-winning performer Kyla Garcia reveals, for the very first time, the backstory of the ever-elusive master criminal whose whereabouts captured the imaginations of children everywhere—through educational video games, animated series, and a popular PBS "gameshow" for middle schoolers in the 1990s.

Life is comfortable for 12-year-old T'Challa in his home of Wakanda, an isolated, technologically advanced African nation. When he's not learning how to rule a kingdom from his father - the reigning Black Panther - or testing out the latest tech, he's off breaking rules with his best friend, M'Baku. But as conflict brews near Wakanda, T'Challa's father makes a startling announcement: he's sending T'Challa and M'Baku to school in America.

Kris Longknife is a daughter of privilege, born to money and power. Her father is the prime minister of her home planet, her mother the consummate politician's wife. She's been raised only to be beautiful and marry well. But the heritage of the military Longknifes courses through Kris' blood - and, against her parents' objections, she enlists in the Marines.

The 200 years' (and counting) peace was a time of tranquility that hasn't been seen since...well, ever. Mankind in the Galactic Age had finally conquered war, so what was left for the military to do but drink and barbecue? That's the kind of military that Sergeant R. Wilson Rogers lived in before he left the fleet to become a smuggler. But it turns out that smuggling is hard. Like getting-arrested-for-dealing-with-pirates-and-forced-back-into-service kind of hard.

Charlie Wilde knew her life would change forever when her family moved from the city of Chicago to the suburbs of Arizona...and that was before she found the bracelet. After putting it on, she notices odd things start to happen. Suddenly Charlie seems to have the speed of a cheetah and the strength of an elephant - and that's just the beginning. She would be thrilled about her transformation if she had any idea how to use the device or control her amazing powers.

Welcome to the Sweet Tooth Ice Cream & Candy Shoppe, where the confections are a bit on the... unusual side. Rock candy that makes you weightless. Jawbreakers that make you unbreakable. Chocolate balls that make you a master of disguise. Four young friends - Nate, Summer, Trevor, and Pigeon - meet the grandmotherly Mrs. White, owner of the Sweet Tooth, and soon learn about the magical side effects of her candies.

Imprisoned for a murder he didn't commit, Kaiden's only hope of early release is in serving as a Warden in the game-world of Nova Online. Playing as a unique class while surrounded by aliens, pirates and warring guilds, he and his squad are tasked with protecting new players and enforcing the rule of law. But Kaiden has other ideas; he is intent on proving his innocence. The keys to his freedom lie hidden in the game's seedy underbelly. And as he'll soon discover, the bloody trail that led to his arrest is more twisted than he could have ever imagined.