Jim Butcher, the #1 New York Times bestselling author of The Dresden Files and the Codex Alera novels, conjures up a new series set in a fantastic world of noble families, steam-powered technology, and magic-wielding warriors… Since time immemorial, the Spires have sheltered humanity, towering for miles over the mist-shrouded surface of the world. Within their halls, aristocratic houses have ruled for generations, developing scientific marvels, fostering trade alliances, and building fleets of airships to keep the peace. Captain Grimm commands the merchant ship, Predator. Fiercely loyal to Spire Albion, he has taken their side in the cold war with Spire Aurora, disrupting the enemy’s shipping lines by attacking their cargo vessels. But when the Predator is severely damaged in combat, leaving captain and crew grounded, Grimm is offered a proposition from the Spirearch of Albion—to join a team of agents on a vital mission in exchange for fully restoring Predator to its fighting glory. And even as Grimm undertakes this dangerous 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…

From the #1 New York Times –bestselling author of the Dresden Files comes an all-new, action-packed fantasy adventure set in the Cinder Spires universe. Benedict Sorellin-Lancaster hasn’t even broken in his lieutenant’s insignia when he’s summoned to meet with the Spirearch of Spire Albion himself for a very special—and very secret—purpose. The Spirearch needs Benedict to retrieve a bag he’s “misplaced” on the Colony Spire known as Dependence, which has strangely cut off all contact with the outside world. It’s a delicate mission at best, a potential bloodbath at worst. To this end, the Spirearch has supplied Benedict with backup in the form of three Warriorborn. But unlike the courageous lieutenant, this trio has formerly used its special gifts for crime, carnage, and outright bloody murder. And all of them were caught and imprisoned because of Benedict. Now, if they behave—and make it back alive—they’ll go free. But when the odd squad reaches Dependence, they soon discover something waiting for a horrific weapon that could shatter the balance of power among the Spires. And Benedict will have to bring his own Warriorborn skills to bear if he, his team, and Spire Albion are to have any hope of survival . . . “While readers familiar with the series will have a better understanding of the ins and outs of the Cinder Spires world, this is mostly a stand-alone story that, despite its brevity, packs a lot of punch in an engaging, fast-paced read with well-defined characters . . . Add Steampunk vibes, terrifying monsters, charming talking cats, and an open ending that tantalizes readers into reading the series—this is a recipe for success. A delectable slice of SF adventure.” — Kirkus Reviews

The fate of the Cinder Spires may be decided by crossed swords in the next exhilarating fantasy adventure in the New York Times bestselling series of noble families, swordplay, and airships. For centuries the Cinder Spires have safeguarded humanity, rising far above the deadly surface world. Within their halls, aristocratic houses rule, developing scientific marvels and building fleets of airships for defense and trade. Now, the Spires hover on the brink of open war. Everyone knows it’s coming. The guns of the great airship fleets that control the skies between the last bastions of humanity will soon speak in anger, and Spire Albion stands alone against the overwhelming might of Spire Aurora’s Armada and its new secret weapon–one capable of destroying the populations of entire Spires. A trading summit at Spire Olympia provides an opportunity for the Spirearch, Lord Albion, to secure alliances that will shape the outcomes of the war, and to that end he dispatches privateer Captain Francis Madison Grimm and the crew of the AMS Predator to bolster the Spirearch’s diplomatic agents. It will take daring, skill, and no small amount of showmanship to convince the world to stand with Spire Albion–assuming that it is not already too late.