When crews on the first two interstellar missions confront the same confounding mystery, their dispute over what it means could alter the trajectory of the entire human race. Thirty years after the last war, in a world of plentiful energy, Lunar and Mars bases, and a global federation of nations, an international crew of exceptional men and women sets out to explore the closest potentially habitable planet in the Alpha Centauri star system.

Five hundred years from its launch, the colony vessel Lovelock is deep into its sub lightspeed journey, carrying four thousand humans in search of a habitable planet. When a series of explosions tear the ship apart, it is forced to land on the nearest possible location: a polar section of the Helix—a vast, spiral construct of worlds, wound about a G-type sun.

Humans have reached the stars. There is no evidence any other species survived its own sentience long enough to do the same. Until now, when the Magellanix deep-space scout Accipiter discovers the Artifact, a million-year-old alien construct resting in a dormant volcano on a faraway world.

The day that changed Melody's life was like any other over the previous two years. She'd found she had a gift for writing, and her career as an author had almost healed the pain of losing her job. When the Secret Service rang her bell, everything changed. Something was nearing Saturn…and it was slowing down. Had she been right about the object?

When the Ornu came, they took Earth in a single night. Humanity never stood a chance. Now, they force us to crew their ships and fight their wars for them. They hold Earth hostage, and if we refuse to do their bidding, they’ll lay waste to our precious blue marble. Slaughtering the billions who live there. But when Captain Bill Henderson is sent to claim a small moon for his masters, he finds something they never accounted for. An ancient warship – a behemoth abandoned for millennia by a species that reached its peak at the dawn of the universe.

Ex-Army paratrooper Griffin “Fin” Brooks thought he left danger behind when his battlefield injuries forced him to pursue a new career in marine biology. But one fateful night off the coast of South Africa, a ship nearly crashes into him and his loyal golden retriever, Jacques. Not just any ship. A starship. Though its alien pilot is dead, the rare extraterrestrial animal inside is not. Fin learns the creature is being smuggled across the galaxy when a pair of interstellar visitors respond to the crash. But those same investigators accuse Fin and his dog of crimes he didn’t even know existed.

Lynesse is the lowly Fourth Daughter of the queen, and always getting in the way. But a demon is terrorizing the land, and now she's an adult (albeit barely) with responsibilities (she tells herself). Although she still gets in the way, she understands that the only way to save her people is to invoke the pact between her family and the Elder sorcerer who has inhabited the local tower for as long as her people have lived here (though none in living memory has approached it).

Oliver Scott is the reclusive genius and trillionaire behind countless world-changing breakthroughs. How does he innovate at such a furious pace? While most hail him as a savior, what if he's actually the most dangerous tyrant humanity has ever seen? A man who will stop at nothing to gain absolute power.

Mathematician Lakshmi Nayak receives a letter from her future self about faster-than-light travel. The equations work, and the letter itself seems to prove the possibility will someday be realized. But her paper on the topic is fiercely criticized, and she's warned away by a sinister Alliance agent. After defecting to the Union, she gets an unexpected offer: "I can build your ship." Shipbuilder John Grant learns of a secret project, which unknown to the world has been traveling to the stars for decades: Black Horizon.

Brad Mendoza is an idiot. He knows it, and so does everyone else. A promising naval career down the drain just, because he accidentally killed 504 civilians. So, it's time for him to give up and accept a dead-end command on Persephone, the worst ship in the fleet. Until he meets the beautiful and cunning Jessica Lin, his new executive officer, who harbors a terrible secret of her own. Now, he's in a race to save her and his stupid ship.

Ryland Grace is the sole survivor on a desperate, last-chance mission - and if he fails, humanity and the Earth itself will perish. Except that right now, he doesn't know that. He can't even remember his own name, let alone the nature of his assignment or how to complete it. All he knows is that he's been asleep for a very, very long time. And he's just been awakened to find himself millions of miles from home, with nothing but two corpses for company.

It’s 1984, and life has changed beyond recognition. Airstrip One, formerly known as Great Britain, is a place where Big Brother is always watching, and nobody can hide. Except, perhaps, for Winston Smith. Whilst working at the Ministry of Truth, rewriting history, he secretly dreams of freedom. And in a world where love and sex are forbidden, where it’s hard to distinguish between friend and foe, he meets Julia and O’Brien and vows to rebel.

Six days ago, astronaut Mark Watney became one of the first people to walk on Mars. Now, he's sure he'll be the first person to die there. After a dust storm nearly kills him and forces his crew to evacuate while thinking him dead, Mark finds himself stranded and completely alone with no way to even signal Earth that he’s alive - and even if he could get word out, his supplies would be gone long before a rescue could arrive. But Mark isn't ready to give up yet.

Inheriting your uncle's supervillain business is more complicated than you might think. Particularly when you discover who's running the place. Charlie's life is going nowhere fast. A divorced substitute teacher living with his cat in a house his siblings want to sell, all he wants is to open a pub downtown, if only the bank will approve his loan. Then his long-lost uncle Jake dies and leaves his supervillain business (complete with island volcano lair) to Charlie. But becoming a supervillain isn't all giant laser death rays and lava pits.

Jazz Bashara is a criminal. Well, sort of. Life on Artemis, the first and only city on the moon, is tough if you're not a rich tourist or an eccentric billionaire. So smuggling in the occasional harmless bit of contraband barely counts, right? Not when you've got debts to pay and your job as a porter barely covers the rent. Everything changes when Jazz sees the chance to commit the perfect crime, with a reward too lucrative to turn down.