Horrible things move through the shadows of our world—bloodsuckers, Full Bloods and mongrel beasts, shapeshifters and minor freaks. For centuries creature hunters known as Skinners have protected humankind. But who protects the Skinners . . . from madness?

Unbeknownst to the human population, a pestilence is raging through an unseen community of low-level monstrosities. What seems, at first glance, a boon for the mortal cause has horrific connotations—as the Skinner team of Cole Warnecki and Paige Strobel races across the Midwest to uncover the shocking secret of the “Mud Flu.” For a nightmare of destruction and blood sacrifice is looming—one born of an unholy meeting nearly two centuries ago—that will pit man against beast, and Skinner against Skinner.

A legendary Skinner has passed. Among the articles he left behind are runes, potions, and powerful weapons to aid in the ongoing war against the unspeakable creatures that prowl the shadows outside normal human consciousness. But there is something else: the remains of a terrifying beast no other Skinner has ever encountered. And it isn't dead.

Skinners, partners, lovers, Cole Warnecki and Paige Strobel are well armed with the tools the late Jonah Lancroft provided. But even his best weapons may not be enough to defeat the monstrosity they now face. A new terror has risen up to infect them both with its virulent malevolence, even as Paige confronts the secrets of her astonishing past. The purest evil walks the world again—the First Deceiver, humankind's darkest nightmare, the self-proclaimed King of the Full Bloods.

No one said fighting monsters was going to be easy . . .

You can't see them, but they're here: hiding in the pools of shadow outside a Chicago burger joint . . . wreaking havoc in Kansas City . . . feeding in sleazy "blood brothels" that cater to humans who itch to get bitten.

Cole was designing video games when he learned the truth-that foul creatures of the night lust for our blood . . . and our world. Now he's a "Skinner," a member of an ancient secret society of warriors entrusted with keeping the terror at bay. Monsters once chained to the wilderness are suddenly free and descending, razor claws ripping, on the unsuspecting city. No one knows what's coming-but Cole and his seductive partner, Paige, will be the first to dive into the meat grinder.