Publisher's Synopsis
The Last Thing They Expected was First Contact!
It's long ago been settled that humanity is all alone in the universe. All the centuries of searches for extra-terrestrial intelligence have turned up exactly nothing. And when humanity's first and only colony in another star system was recently invaded, it was by unwanted human interlopers from Earth. They call themselves The Fruitful, and are sure that God himself is guiding them. The new arrivals caused trouble enough that many of the original settlers packed up and moved elsewhere on the planet--only to discover some very alarming signs that they aren't quite so alone as they thought.
Phil Bertrand and Hazel Castagna had striven for years to reach and settle their new world, but they found themselves on different sides when the Fruitful arrived and forced hard choices on everyone. Now, without quite intending it, they have become allies again, somewhat reluctant leaders of a group that must find a way to protect humans from aliens --and, perhaps, aliens from humans. But exactly who--and what--are the aliens?
Thrilling science fiction adventure by Dr, Stanley Schmidt, long-time editor of Analog Magazine