First Contact (In Her Name: The Last War #1)

Terran survey ship Aurora finds two habitable planets in an uncharted star system. But Aurora is disabled by gigantic alien warships and boarded by blue-skin females with fangs and claws. The warriors slaughter the crew in ritual one-on-one combat. The sole survivor is returned to Earth. This Messenger bears a real-time globe device that counts down to an impending attack.

That is the way of the Kreelan Empire. For centuries before man have they waged war, seeking a prophesied savior. Soon to be extinct, the ancient species wages their last war, hoping for redemption of sins long past.