BarrenBook - 2018
"Each night, the world is overrun by bloodthirsty demons. For centuries, humanity survived only by hiding behind defensive wards, magical symbols with the power to repel the demons. Now, the rediscovery of long forgotten combat wards has given them the magic they need to fight back."--Back cover.
Publisher: New York, NY : Harper Voyager, 
Edition: First edition.
Characteristics: 135 pages : map ; 21 cm