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....

For Hayden Cross, a military investigator in the far future, whether his wife faked her death is the question that is probably going to get him killed. Having lost the only job that kept him sane, he has few resources and fewer leads. Oh, and a sadistic crime lord really wants to kill him. As he fights through an underworld of fanatical rebels, callous bounty hunters, and corrupt cops, each step takes him closer to the truth about his wife’s fate and the oppressive government he once loyally served. On the way, he may even stop a war...but only if he betrays everyone he loves.

In the wilds of a jungle planet, the Legion fights in brutal combat as Republic marines fly their SLICS from one tragedy to the next. H292, a repurposed warbot, shows the heart of a hero as he wades into the battle not to destroy - but to save.

A company of Army Rangers is sent on an interstellar colony ship to secure a foothold on a dangerous, alien planet through violence of action. Leaving behind a warring Earth flung headfirst into a conflict of mutual assured destruction, the Rangers and the accompanying crew of first colonists are guided on a 40-year journey by an unprecedented artificial intelligence. But when they emerge from the frigid embrace of cryosleep, they awake to a nightmare, finding themselves greeted by the same ruthless enemy that brought about the ruin of Earth.

More than two centuries after World War III poisoned the planet, the final bastion of humanity lives on massive airships circling the globe in search of a habitable area to call home. Aging and outdated, most of the ships plummeted back to Earth long ago. The only thing keeping the two surviving lifeboats in the sky are Hell Divers - men and women who risk their lives by skydiving to the surface to scavenge for parts the ships desperately need.

Idealistic Navy Lieutenant Jacob Grimm just wanted to honor his mother’s sacrifice in the last great war. When he’s forced to return fire and destroy a squadron of ships to save his own, he thinks he’s the hero...until they discover the ships are full of children. Disgraced and denied promotion, Jacob’s career is over. That is until the head of ONI needs a disposable officer to command a battered destroyer on the rim.

Two civilizations clash. A rebellion grows. The fate of the galaxy hangs in the balance. Technical Chief "Pappy" Gunther is a grizzled, burning-out commando in the United Earth Armed Forces. He ponders a return to civilian life, yet feels a strong sense of belonging to his elite team. When colonists on a far-flung world request aid, a task force from several allied systems is assembled. Pappy and his crack unit are sent to investigate and to engage a mysterious alien force from beyond.

After discovering a cache of Prothean technology on Mars in 2148, humanity is spreading to the stars---the newest interstellar species, struggling to carve out its place in the greater galactic community. On the edge of colonized space, ship commander and Alliance war hero David Anderson investigates the remains of a top secret military research station---smoking ruins littered with bodies and unanswered questions. Who attacked this post, and for what purpose?

Five years ago, the US Space Force became a reality. And while those writing the checks took things very seriously, the other military branches did not. As a result, Space Force was populated by undesirables. My name is Captain Ethan Stone, a decorated member of SEAL Team Six turned Space Force "recruit". Flash forward five years and between tenses. President West is in office. Power has shifted. And Space Force is defunded. With just a handful of us still living on base, we find ourselves being evicted. But before all of us can leave, aliens invade.

In 2157, a mysterious gas known as Variant spreads across the globe, killing or mutating most organic life. The surviving humans take refuge in an underground city, determined to return home. But after generations of failures and botched attempts, hope is beginning to dwindle. That is, until a young scientist makes a unique discovery, and everything changes. Suddenly, there's reason to hope again, and it rests within a group of genetically engineered children that are both human and Variant.

I Am Number Four: The Lost Files: Secret Histories is the second collection of action-packed novellas from Pittacus Lore. Initially published separately as digital originals, these three stories are now together in one volume.

The world had become used to the metahumans - people sometimes perfectly ordinary, but sometimes quite extraordinary in appearance - who mostly worked with their governments as high-powered peace officers, fighting crime, and sometimes fighting rogue metahumans who had become super-criminals. Then that comfortable world ended in just one terrifying day.

Sheriff Hayden Duke was born on the Pilgrim, and he expects to die on the Pilgrim, like his father, and his father before him. That's the way things are on a generation starship centuries from home. He's never questioned it. Never thought about it. And why bother? Access points to the ship's controls are sealed, the systems that guide her automated and out of reach. It isn't perfect, but he has all he needs to be content. Until a malfunction forces his engineer wife to the edge of the habitable zone to inspect the damage.

Captain Mitchell "Ares" Williams is a space marine and the hero of the Battle for Liberty whose shot heard 'round the universe saved the planet from a nearly unstoppable war machine. He's handsome, charismatic, and the perfect poster boy to help the military drive enlistment. Pulled from the war and thrown into the spotlight, he's as efficient at charming the media and bedding beautiful celebrities as he was at shooting down enemy starfighters.

Benjamin Carter Mason died last night. Maybe he threw himself off a bridge into Los Angeles Harbor, or maybe he burned to death in a house fire in San Pedro; it doesn't really matter. Today, Mason's starting a new life. He's back in boot camp, training for the only war left that matters a damn.

Two hundred years ago, a fleet of colony ships left Earth and started a settlement on Proxima Centauri. Centurion Space Force pilot Nathan Stacker didn't expect to return home to find his wife dead. He didn't expect the murderer to look just like him, and he definitely didn't expect to be the one to take the blame. But his wife had control of a powerful secret. A secret that stretches across the light years between two worlds and could lead to the end of both. Now that secret is in Nathan's hands, and he's about to make the most desperate evasive maneuver of his life.

Convicted criminal James Griffin-Mars is no one's hero. In his time, Earth is a toxic, abandoned world, and humans have fled into the outer solar system to survive, eking out a fragile, doomed existence among the other planets and their moons. Those responsible for delaying humanity's demise believe time travel holds the key, and they have identified James, troubled though he is, as one of a select and expendable few ideally suited for the most dangerous job in history.

The world had become used to the metahumans - people sometimes perfectly ordinary, but sometimes quite extraordinary in appearance - who mostly worked with their governments as high-powered peace officers, fighting crime, and sometimes fighting rogue metahumans who had become super-criminals. Then that comfortable world ended in just one terrifying day.

Devi Morris isn't your average mercenary. She has plans. Big ones. And a ton of ambition. It's a combination that's going to get her killed one day - but not just yet. That is, until she gets a job on a tiny trade ship with a nasty reputation for surprises. The Glorious Fool isn't misnamed; it likes to get into trouble, so much so that one year of security work under its captain is equal to five years everywhere else. With odds like that, Devi knows she's found the perfect way to get the jump on the next part of her plan.

All Doctor Dire wants to do is save the world. But those pesky heroes keep getting in the way, and it's all she can do to give them a good fight without killing them. Supervillainy is such an underappreciated job these days....

The end begins with a viral outbreak unlike anything mankind has ever encountered before. The infected are subject to delirium, fever, a dramatic increase in violent behavior, and a one-hundred percent mortality rate. Death. But it doesn't end there. The victims return from death to walk the earth. When a massive military operation fails to contain the plague of the living dead it escalates into a global pandemic.

A walled city surrounded by lush land, protected by high mountain summits, and fortified by a massive gate to secure the only pass into the valley, The Bastion remained humanity's last hope against the fearsome undead creatures known as the Inferi Scourge. On one fateful day, the valley gate failed and the Inferi Scourge overran and destroyed the human settlements outside the walls, trapping the remaining survivors inside the city. Now, decades later, the last remaining humans are struggling to survive....

When out-of-shape IT technician Roen wakes up and starts hearing voices in his head, he naturally assumes he’s losing it. He isn’t. As of last night, he has a passenger in his brain - an ancient alien life-form called Tao, whose race crash-landed on Earth before the first fish crawled out of the oceans. Over the millennia his people have trained human heroes to be great leaders, to advance our species at a rate far beyond what it would have achieved on its own. Split into two opposing factions - the peace-loving, but under-represented Prophus, and the savage, powerful Genjix - the aliens have been in a state of civil war for centuries.

In the year 2280, an alien fleet attacked the Earth. Their weapons were unstoppable, their defenses unbreakable. Our technology was inferior, our militaries overwhelmed. Only one starship escaped before civilization fell. Earth was lost. It was never forgotten. Fifty-two years have passed. A message from home has been received. The time to fight for what is ours has come.

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....

Seventeen-year-old Ryn Whittaker is a Citadel: an elite, enhanced soldier specially chosen to guard a Rift, a mysterious and dangerous portal to alternate Earths scientists cannot control or close. Trained from the age of 14, Ryn can run faster, jump farther, and fight better than a Navy SEAL - which is good when you’re not sure if a laser-wielding Neanderthal or an axe-wielding Viking is trying to make it through the Rift and into your world. But the teenager’s military conditioning and education have not prepared her for the boy who crosses through.

Tucked away in a high-tech Tactical Operations Center, inside an isolated safehouse in the Horn of Africa, sits Agency analyst Zack Altringham. He is Kenyan-born, Princeton-educated, badly burnt-out - and condemned by his language and cultural skills to a lifetime of fighting America's shadow counter-terror wars.

Rogue hackers Petal and Gabriel are low on food and water. Their reputation precedes them and they are no longer able to hustle the crime community for supplies. With survival becoming harder, they’re left with no other choice but to accept a risky job from a dangerous individual. The two will have to negotiate with the Tinker - a woman whose reputation for psychotic behaviour is known across the nuclear-blasted Abandoned Lands; infiltrate a town overrun with killers; and recover a cache of exceptionally rare information.

They call themselves SYLO and they are a secret branch of the U.S. Navy. SYLO's commander, Captain Granger, informs Pemberwick residents that the island has been hit by a lethal virus and must be quarantined. Tucker believes there’s more to SYLO’s story. He was on the sidelines when the high school running back dropped dead with no warning. He saw the bizarre midnight explosion over the ocean, and the mysterious singing aircraft that travel like shadows through the night sky. He tasted the Ruby - and experienced the powers it gave him - for himself.

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.