Bloodlands

The New Badlands--a desolate area in the West forged by the terrible events that altered the entire country, where a few frightened citizens retreated underground to shelter from the brutal weather and from a society gone deadly dangerous. Then the vampire arrived and they started calling it the Bloodlands. Not because Gabriel, the so-called monster running from his true self, was searching for his lover's murderer, nor because Mariah, the woman who reluctantly took him in, was willing to do anything to survive in the changed world. No, the Badlands officially became the Bloodlands the moment a gun-for-hire who'd decided to slay every monster left in the country came after Gabriel.