Ghost Fleet: Book Three of the Defense Force Chronicles

With worlds lost, the Defense Force is in retreat.The Invaders have a new world to call their own, and with humans a slave soldiers to defend it, they can focus their sites on Earth.With an ally from the past, and a hodgepodge group of defenders, the Defense Force will try a desperate plan to stop the Invaders once and for all.They need to succeed or humanity will face a fate worse than death.