The Android's Dream | John Scalzi

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 extraordinare, who, with the help of a childhood friend turned artificial intelligence, scours the earth looking for the rare creature.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 SF 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 a grand diplomatic coup, a 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 the sheep--and to protect the future of humanity.