The New York Times bestselling author takes us back to the world of the Alchemical Journeys in this action-packed follow-up to Middlegame, Seasonal Fears, and Tidal Creatures.

The gods live and die at our whim.

More than a century has passed since Asphodel Baker refined the process allowing her to imbue alchemically created life with power in a way no one else had ever been able to achieve. More than a century since she built the Impossible City on the ruins of Olympus, forging it from nothing more than imagination and spite, and penned it in plain view, enabling it to be read and cherished and believed by children the world over.

And now, so long after her exit from the world, the descendants of her dark alchemy—who exist in a reality that inches ever closer to the hellscape of her imagination—step into a place of birth, of discovery, of horror, to make amends for the sins of the past.

Can the gods of today defeat the evils of their maker, or will the legacy of the most powerful alchemist the world has ever known prove to be their undoing?