Three hostile alien races have united against humanity, determined to halt our expansion into space. The mastermind behind this lethal alliance is a traitor - Charles Boutin. He was a Colonial Defence Force scientist with access to their biggest military secrets. Now the CDF's only hope is to discover Boutin's plan. Trouble is, Boutin's dead. As a supersoldier created from Boutin's own DNA, Jared Dirac may have answers.

John Perry was living peacefully on one of humanity's colonies - until he and his wife were offered an opportunity these ex-supersoldiers couldn't resist. To come out of retirement and lead a new frontier world. However, once on the planet, they discover they've been betrayed. For this colony is a pawn in an interstellar game of war and diplomacy. Humanity's Colonial Union has pitched itself against a new, seemingly unstoppable alien alliance dedicated to ending all human colonization.

"I'm Zoe Boutin Perry: A colonist stranded on a deadly pioneer world. Holy icon to a race of aliens. A player in a interstellar chess match to save humanity. Seventeen years old. Everyone on Earth knows the tale I am part of. But you don't know my tale: I'm going to tell it to you now, the only way I know how: not straight but true, the whole thing, to try make you feel what I felt: the joy and terror and uncertainty, panic and wonder, despair and hope."

The people of Earth now know that the human Colonial Union has kept them ignorant of the dangerous universe around them. For generations the CU had defended humanity against hostile aliens, deliberately keeping Earth an ignorant backwater and a source of military recruits. Now the CU’s secrets are known to all. Other alien races have come on the scene and formed a new alliance - an alliance against the Colonial Union. And they’ve invited the people of Earth to join them. For a shaken and betrayed Earth, the choice isn't obvious or easy.

Humans expanded into space...only to find a universe populated with multiple alien species bent on their destruction. Thus was the Colonial Union formed, to help protect us from a hostile universe. The Colonial Union used the Earth and its excess population for colonists and soldiers. It was a good arrangement...for the Colonial Union. Then the Earth said: no more.

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.

The Galactics arrived with their Battle Fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined a vast Empire that spanned the Milky Way. More than a century has passed since the glorious day of Earth’s annexation. Struggling to hold on to a handful of planets in the frontier provinces, humanity is at war with Rigel. After the destruction of both our fleet and theirs, a time of quiet rebuilding has begun.

After saving the world many times, the Merry Band of Pirates have accepted the inevitable: Earth is doomed. All they can do is try to bring a few thousand people to safety, before vicious aliens arrive to destroy humanity's home world. No. There is one other thing they can do: hit the enemy so hard that the aliens will regret they ever heard of humans.

The collapse of The Flow, the interstellar pathway between the planets of the Interdependency, has accelerated. Entire star systems - and billions of people - are becoming cut off from the rest of human civilization. This collapse was foretold through scientific prediction...and yet, even as the evidence is obvious and insurmountable, many still try to rationalize, delay and profit from, these final days of one of the greatest empires humanity has ever known.

Ensign Andrew Dahl has just been assigned to the Universal Union Capital Ship Intrepid, flagship of the Universal Union since the year 2456. Life couldn’t be better…until Andrew begins to pick up on the facts that (1) every Away Mission involves some kind of lethal confrontation with alien forces; (2) the ship’s captain, its chief science officer, and the handsome Lieutenant Kerensky always survive these confrontations; and (3) at least one low-ranked crew member is, sadly, always killed.

Jane Sagan: Soldier. Killer. Lover. Dreamer. In John Scalzi's best-selling Old Man's War series of science-fiction novels, we see this warrior woman as the other characters see her - silent and strong, from the outside. But now The Sagan Diary shows us Sagan from another point of view: her own, as she prepares to leave military life and join her new husband and adopted daughter on a colony world.

Hilketa is a frenetic and violent pastime where players attack each other with swords and hammers. The main goal of the game: obtain your opponent's head and carry it through the goalposts. With flesh and bone bodies, a sport like this would be impossible. But all the players are "threeps", robot-like bodies controlled by people with Haden's Syndrome, so anything goes. No one gets hurt, but the brutality is real, and the crowds love it. Until a star athlete drops dead on the playing field.

Bob Johansson didn't believe in an afterlife, so waking up after being killed in a car accident was a shock. To add to the surprise, he is now a sentient computer and the controlling intelligence for a Von Neumann probe.

The battle-scarred star carrier Flying Dutchman is finally on her way back to Earth, after an exceptionally successful series of missions that have once again saved the world. The ship needs a serious refit, and her exhausted crew just wants a break from constant clandestine warfare against a vicious and superior enemy. Wishes come true, right? Not for the Merry Band of Pirates.

Bob Johansson has just sold his software company and is looking forward to a life of leisure. There are places to go, books to read, and movies to watch. So it's a little unfair when he gets himself killed crossing the street. Bob wakes up a century later to find that corpsicles have been declared to be without rights, and he is now the property of the state. He has been uploaded into computer hardware and is slated to be the controlling AI in an interstellar probe looking for habitable planets.