John Scalzi

John Perry did two things on his 75th birthday. First he visited his wife's grave. Then he joined the army.
 
The good news is that humanity finally made it into interstellar space. The bad news is that planets fit to live on are scarce--and alien races willing to fight us for them are common. So: we fight. To defend Earth, and to stake our own claim to planetary real estate. Far from Earth, the war has been going on for decades: brutal, bloody, unyielding.
 
Earth itself is a backwater. The bulk of humanity's resources are in the hands of the Colonial Defense Force. Everybody knows that when you reach retirement age, you can join the CDF. They don't want young people; they want people who carry the knowledge and skills of decades of living. You'll be taken off Earth and never allowed to return. You'll serve two years at the front. And if you survive, you'll be given a generous homestead stake of your own, on one of our hard-won colony planets.
 
John Perry is taking that deal. He has only the vaguest idea what to expect. Because the actual fight, light-years from home, is far, far harder than he can imagine--and what he will become is far stranger.

The Ghost Brigades are the Special Forces of the Colonial Defense Forces, elite troops created from the DNA of the dead and turned into the perfect soldiers for the CDF's toughest operations. They're young, they're fast and strong, and they're totally without normal human qualms.

The universe is a dangerous place for humanity--and it's about to become far more dangerous. Three races that humans have clashed with before have allied to halt our expansion into space. Their linchpin: the turncoat military scientist Charles Boutin, who knows the CDF's biggest military secrets. To prevail, the CDF must find out why Boutin did what he did.
 
Jared Dirac is the only human who can provide answers -- a superhuman hybrid, created from Boutin's DNA, Jared's brain should be able to access Boutin's electronic memories. But when the memory transplant appears to fail, Jared is given to the Ghost Brigades.
 
At first, Jared is a perfect soldier, but as Boutin's memories slowly surface, Jared begins to intuit the reason's for Boutin's betrayal. As Jared desperately hunts for his "father," he must also come to grips with his own choices. Time is running out: The alliance is preparing its offensive, and some of them plan worse things than humanity's mere military defeat…

Jack Holloway works alone. Hundreds of miles from ZaraCorp’s headquarters on planet, 178 light-years from the corporation’s headquarters on Earth, Jack is content as an independent contractor. As for his past, that’s not up for discussion.

Then, in the wake of an accidental cliff collapse, Jack discovers a seam of unimaginably valuable jewels, to which he manages to lay legal claim just as ZaraCorp is cancelling their contract with him for his part in causing the collapse. Briefly in the catbird seat, legally speaking, Jack pressures ZaraCorp into recognizing his claim, and cuts them in as partners to help extract the wealth.

But there’s another wrinkle to ZaraCorp’s relationship with the planet Zarathustra. Their entire legal right to exploit the verdant Earth-like planet is based on being able to certify to the authorities on Earth that Zarathustra is home to no sentient species.

Then a small furry biped—trusting, appealing, and ridiculously cute—shows up at Jack’s outback home. Followed by its family. As it dawns on Jack that despite their stature, these are people, he begins to suspect that ZaraCorp’s claim to a planet’s worth of wealth is very flimsy indeed…and that ZaraCorp may stop at nothing to eliminate the “fuzzys” before their existence becomes more widely known.

A human diplomat creates an interstellar incident when he kills an alien diplomat in a most…unusual…way. To avoid war, Earth’s government must find an equally unusual object: A type of sheep ("The Android's Dream"), used in the alien race's coronation ceremony.
 
To find the sheep, the government turns to Harry Creek, ex-cop, war hero and hacker extraordinaire, who with the help of Brian Javna, a childhood friend turned artificial intelligence, scours the earth looking for the rare creature. And they find it, in the unknowing form of Robin Baker, pet store owner, whose genes contain traces of the sheep DNA.
 
But there are others with plans for the sheep as well: Mercenaries employed by the military. Adherents of a secret religion based on the writings of a 21st century science fiction author. And alien races, eager to start a revolution on their home world and a war on Earth.
 
To keep our planet from being enslaved, Harry will have to pull off the greatest diplomatic coup in history, a grand gambit that will take him from the halls of power to the lava-strewn battlefields of alien worlds. There's only one chance to get it right, to save the life of Robin Baker -- and to protect the future of humanity.