War in the skies is only the beginning of what waits beyond the clouds.
For centuries, humanity has lived within towering Spires that protect them from the dangers of the world below. Airships rule the skies, noble houses shape alliances, and the balance of peace rests on fragile wings. Captain Grimm, commander of the Predator, is loyal to Spire Albion and skilled at disrupting enemy fleets. But when his ship is damaged in battle, he accepts a mission that will test every oath he has made.
Joined by a small band of gifted warriors and scholars, Grimm uncovers a rising threat older than the Spires themselves.
The Aeronaut’s Windlass by Jim Butcher is a soaring tale of honor, courage, and the storm gathering over all humankind.
