Crossover is the first novel in a series which follows the adventures of Cassandra Kresnov, an artificial person, or android, created by the League, one side of an interstellar war against the more powerful, conservative Federation. Cassandra is an experimental design - more intelligent, more creative, and far more dangerous than any that have preceded her. But with her intellect come questions, and a moral awakening. She deserts the League and heads incognito into the space of her former enemy, the Federation, in search of a new life.

One thousand years after Earth was destroyed in an unprovoked attack, humanity has emerged victorious from a series of terrible wars to assure its place in the galaxy. But during celebrations on humanity’s new homeworld, the legendary Captain Pantillo of the battle carrier Phoenix is court-martialed then killed, and his deputy, Lieutenant Commander Erik Debogande, the heir to humanity’s most powerful industrial family, is framed for his murder.

Our universe is ruled by physics, and faster-than-light travel is not possible - until the discovery of The Flow, an extradimensional field we can access at certain points in space-time that transports us to other worlds, around other stars. Humanity flows away from Earth, into space, and in time forgets our home world and creates a new empire, the Interdependency, whose ethos requires that no one human outpost can survive without the others. It's a hedge against interstellar war - and a system of control for the rulers of the empire.

Leiyn “Firebrand” is no stranger to a fight. A brash ranger of the Titan Wilds, she takes up her bow to ward against the colossal spirit creatures known as titans, ever a threat to the colonies she has sworn to protect. But no amount of skill can guard against treachery. When tragedy strikes the rangers’ lodge, Leiyn vows to avenge the fallen. But if she is to succeed, she must embrace a power within her she has long denied. Power to move mountains and rivers. Power over life and death.

Get ready to experience two more origin stories in the Backyard Starship universe.

Cole Riker is a Slip Runner. A contractor tasked with finding alien salvage in exchange for credits. For an ex-smuggler like Cole, there’s a catch: Don’t break the terms of parole. That means doing things by the book. Find salvage, turn it in, get paid. But everything changes when a retrieval mission lands him in a previously unknown sector. There, he finds the material he’s been sent to recover, along with something more. A brand-new form of ancient alien life.

For four millennia, the 16 planets of the Imperium sector have served as a bastion of peace against the Chaosic Regions. The Imperium's legacy can be attributed to the formidable military power of the Stratus, the enforcers of the Supreme and the Senate. However, as is often the case with empires, it is the smallest cracks that threaten to shatter their foundations. Could this be the beginning of the end?

Ten years ago, Amelia woke up alone and lost in a broken world where she had to fight for her survival. Now, after reaching the pinnacle of power, defeating the Void itself, and escaping the abyss, she has finally found her way back into the real world. But instead of returning to Earth, she arrives in the land of Vacuos. A fantasy world with magic, monsters, Classes, and Levels. A world that is governed by a System like it were a video game.

Geary believed in the Alliance. Even when he uncovered overwhelming evidence that the highest echelons of the government and fleet command were involved in secret programs and prison camps, he believed it was worth saving. He believed his duty was to see that justice was served even though some factions feared that revealing the truth would cause the Alliance to crumble. But after narrowly surviving two assassination attempts when he brings evidence of the misdeeds to the capital star system, Geary realizes that some want to get rid of him.

There he was in his sailboat in the middle of the Atlantic, all alone and loving it. Well, there was a US Navy carrier group on his southern horizon, but he was a Navy guy himself, so he didn't mind. Then came the UFOs, hurtling in from the Outer Black to overfly the carriers at Mach 17. Their impossible aerobatics were bad enough—but then they started shooting at each other, and at the Navy, with nukes. Little ones at first, but winding up with a 500 megatonner at 90 miles that fried every piece of electronics within line-of-sight.

On a cold spring night in 1952, a huge meteorite fell to earth and obliterated much of the East Coast of the US, including Washington, DC. The ensuing climate cataclysm will soon render the Earth inhospitable for humanity, as the last such meteorite did for the dinosaurs. This looming threat calls for a radically accelerated effort to colonize space and requires a much-larger share of humanity to take part in the process. Elma York’s drive to become the first lady astronaut is so strong that even the most dearly held conventions of society may not stand a chance against her.

Half American, half Japanese, expert in both worlds but at home in neither, John Rain is the best killer money can buy. You tell him who. You tell him where. He doesn’t care about why... Until he gets involved with Midori Kawamura, a beautiful jazz pianist - and the daughter of his latest kill.

Born to oppression, Siena is an ordinary young woman, until an act of defiance leaves her scarred and marked as a rebel. She's sold to Ero, a fallen Krey with a desperate plan to redeem his once-powerful family. He intends to enhance slaves by altering their genetic code, increasing their value through an illegal experiment.

Stephanie Harrington had always expected to be a forest ranger on her homeworld of Meyerdahl until her parents relocated to the frontier planet of Sphinx in the far distant Star Kingdom of Manticore. It should have been the perfect new home - a virgin wilderness full of new species of every sort, just waiting to be discovered. But Sphinx is a far more dangerous place than ultra-civilized Meyerdahl, and Stephanie's explorations come to a sudden halt when her parents lay down the law: no trips into the bush without adult supervision!

Birdie Binkowitz is just a little bitter. As a young actress, she was the toast of Hollywood, definitely destined for greatness. Then the dragons had to rise up from their thousand-year slumber, take over Earth and ruin everything. Twenty years later, Birdie is living her worst life in her hometown of Tuscaloosa, Alabama, working at her father's Seed and Feed (and Bagels). Then, a mysterious dragon appears in front of the store seeking her help. He’s got a bone to pick with his fellow dragons–and he wants to hit them where it hurts.

Crossover is the first novel in a series which follows the adventures of Cassandra Kresnov, an artificial person, or android, created by the League, one side of an interstellar war against the more powerful, conservative Federation. Cassandra is an experimental design - more intelligent, more creative, and far more dangerous than any that have preceded her. But with her intellect come questions, and a moral awakening. She deserts the League and heads incognito into the space of her former enemy, the Federation, in search of a new life.

On the fringes of human space, a murder will light a fuse and send two rebels on a planetary scale collision course. This audiobook box set contains the first three books of the Opus X sci-fi series from Michael Anderle: Obsidian Detective, Shattered Truth, and Investigating Deceit. Jia lives on Earth, where peace is a given. Erik is on society’s frontier, where authority depends on how much firepower you wield. She is from the powerful, the elite. He is with the military. Both want the truth—but is revealing it good for humanity?

Space travel just isn't what it used to be. With the invention of quantum teleportation, space heroes aren't needed anymore. When one particularly unlucky ex-adventurer masquerades as famous pilot and hate figure Jacques McKeown, he's sucked into an ever-deepening corporate and political intrigue. Between space pirates, adorable deadly creatures, and a missing fortune in royalties, saving the universe was never this difficult!

After losing his job and family, Flint Reed finds himself in the middle of a terrorist attack. With nothing but his wits and experience as a former Union police officer, he must do everything he can to stay alive. As he soon discovers, however, there are also hostages, and no one is coming to save them. All hope falls to Flint. But as he fights to navigate the building, the real answers begin to unravel. What are the terrorists really after, and why are they so intent on getting into the vault?

When the Guardians attempt to evacuate a Kree prison planet and end up in a fight for their lives - what else is new? - they discover their old pal Groot is stretched a little thin. Someone is planting stolen branches of the monosyllabic hero and selling the saplings across the galaxy! The search to find Groot's missing pieces forces the Guardians into an alliance with the unscrupulous Collector, but the real problem is more complicated than he wants them to believe.

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.

Ryan Drake is a man who finds people who don't want to be found. Once a British soldier, he now works for the CIA, leading an elite investigation team that tracks down missing agents. But his latest mission - to free a prisoner, code-named Maras, and bring her back onto US soil within 48 hours - is more dangerous than anything his team has attempted before. Hunted by his former comrades, Drake is left with no choice but to trust a dangerous woman he barely knows.

When a high-value scientist is taken hostage inside the galaxy's most dangerous prison, Halek Cain is the only man for the job. The last remaining survivor of the Reaper program, Hal is an unstoppable force of fuel and madness. A veteran amputee-turned-cyborg, he has a history of violence and a talent for killing that is unmatched by any soldier. With the promise of freedom as his only incentive, he'll stop at nothing to earn back his life from the people who made him, imprisoned him, and were too afraid to let him die.

Simon Kovalic, top intelligence operative for the Commonwealth of Independent Systems, is on the front line of the burgeoning Cold War with the aggressive Illyrican Empire. He barely escapes his latest mission with a broken arm and vital intel that points to the empire cozying up to the Bayern Corporation: a planet-sized bank. There’s no time to waste, but with Kovalic out of action, his undercover team is handed over to his ex-wife, Lt. Commander Natalie Taylor.

Tower 7 has gone completely dark, and security androids are killing civilians. No one knows what has become of the tower's 520,000 residents or who is responsible for the mysterious assault, but the priority of the mission is clear. Tycho and Gabriel must breach the tower, investigate the missing civilians, and locate the one responsible…all while trying to stay alive.

Logan Conner is the son of a king, the heir to the largest of the five star-dominions, and the best mech pilot in the galaxy. His people are plagued by pirates and raiders, surrounded by enemies, and not even his father can fight them all. Logan gives up his position, his rank, even his name, and becomes Jonathan Slaughter, leader of a rough-and-ready band of mercenary mech-jocks bent on taking the battle to the enemy on their own terms.

In the aftermath of the superhuman Civil War, Captain America was shot down in cold blood. In the aftermath of his death, Cap's longtime partner the Falcon makes revenge his first order of business. Sharon Carter finds herself spiraling out of control, a captive of the Red Skull's minions. And Bucky Barnes, a.k.a. the Winter Soldier, must reconcile his own sordid past with the calling to become...the new Captain America!

Alec works in the Detroit Overseer-factories, building a mysterious alien device. When three strangers appear, he's provided an opportunity to escape after years of servitude. Cole, a Freeborn loner, encounters Lina after her village is destroyed by the alien Occupation. Together, they make the arduous journey to a fabled safe-zone, trying to stay one step ahead of the enemy drones on their trail. Dex is a Hunter, working for the Occupation to track down escaped factory slaves, or Roamers, at all costs. But his latest hunt uncovers a massive secret.

You think you’re struggling to find your place in the universe? Consider poor old Colin Douglass, a terminally ill insurance agent who awakens from centuries in cryogenic freeze to find Earth is a devastated wasteland. Now, he’s being pursued by a homicidal interstellar tourist board, and calculating insurance dividends is as outdated as making stone axes. Sci-fi-hating technophobe Colin seeks a cure for his illness in this strange new galaxy where toilets talk back, and door handles are a long-forgotten relic.

A thousand years ago, an alien invasion set humanity back to the Iron Age. Slowly, we recovered, colonizing the Solar System in peace. And discovered that an unknown force is stopping us from exploring any farther. But before the cause can be discovered, a slow-burning conspiracy threatens to explode into System-wide war. With enemies at home and in the darkness beyond, a team of unlikely heroes-a janitor, a mercenary, an asteroid miner, and a pirate-are the only ones who can avert a second apocalypse. This set includes the first three books of the newly-finished REBEL STARS series.