Shattered dawn

The Drone-masters are coming, and Earth has no idea. Medical scientist by training and ship's captain by circumstance, Tag Brewer leads a band of aliens, a few humans, and a synthetic life-form into the deepest reaches of unexplored space. They may be all that stands between humanity and utter annihilation. It's up to Tag's crew to unveil the shroud of secrecy surrounding the Drone-masters. He must destroy them before they destroy Earth.