John Scalzi's The Last Colony is the third in The Old Man's War series They must save themselves
- or die trying John Perry was living peacefully on one of humanity's colonies
- until he & his wife were offered an opportunity these ex-supersoldiers couldn't resist To come out of retirement & 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 & diplomacy Humanity's Colonial Union has pitched itself against a new seemingly unstoppable alien alliance dedicated to ending all human colonization As this contest rages above Perry struggles to keep his terrified colonists alive on the surface below
- despite dangerous interstellar politics violence & treachery & the planet has yet to reveal its own fatal secrets