Cinder Spires 1: Aeronauts Windlass - Jim Butcher
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Since time immemorial humanity has lived inside the Spires, habitats towering for miles over the dangerous, monster-inhabited surface of the world. Captain Grimm of the merchant airship, Predator, was dismissed from Spire Albion's military in disgrace - now his ship and crew are all he has, and he's fiercely loyal to both.
When the Predator is severely damaged in combat Grimm has only one choice - take on a clandestine mission for Albion's leaders, or stay grounded for good. And even as Grimm undertakes this perilous task, he will learn that the conflict between the Spires is merely a premonition of things to come. Humanity's ancient enemy, silent for more than ten thousand years, has begun to stir once more.
And death will follow in its wake . . .
When the Predator is severely damaged in combat Grimm has only one choice - take on a clandestine mission for Albion's leaders, or stay grounded for good. And even as Grimm undertakes this perilous task, he will learn that the conflict between the Spires is merely a premonition of things to come. Humanity's ancient enemy, silent for more than ten thousand years, has begun to stir once more.
And death will follow in its wake . . .