In a world of science, magic is an abomination, but not the vile creation Royal Inquisitor Simon Whitlock once believed it to be. Accompanied by Luthor Strong, and Matilda Hawke, a werewolf, they return to the capital of Callifax, eager to convalesce after their last adventure.

Inquisitor Simon Whitlock must face a new breed of monster, one that will force the Inquisitor to face his very shortcomings as a friend and a man. Simon has killed a demon, werewolves, and vampires, but some of the most dangerous demons live inside us all. Demons that can't be killed by swords and guns.

Sherlock Holmes meets the world of magic! When magic invaded a world on the brink of its industrial revolution, the Inquisitors were formed to keep the magic at bay. Inquisitor Simon Whitlock is sent to the frozen tundra to investigate a report of werewolves. Though skeptical, he quickly learns that the werewolves aren’t the only magical threat to the kingdom.

Magic is an abomination—one that has grown tired of being hunted. The Inquisitors have hunted magical creatures for a dozen years, striking fear into those that dare escape the Rift. But now, in the swamps in Northern Ocker, a new evil is rising—one that's not afraid of Inquisitors. Simon and Luthor must hunt this new evil into the very house of madness. And the madness seems to be catching…