Evening Storm by Andrea Pearson

With nothing to stop him from completing his contract, Abel drives home from one of the worst tortures he’s ever experienced. He now has one goal in mind: destroy the woman he loves, or watch his mother be brutally murdered.
He doesn’t get far, though, before he’s recruited to stop a powerful demon—a beast without senses that kills immediately on contact and disappears for days on end. Luckily, Abel has his tattoos to help him. Unluckily, he’s forced to work with Lizzie again, stirring up memories and feelings he’d hoped to keep buried.
Despite the things he experienced at the hands of the Shadow Prophet, Abel and Lizzie’s close proximity weakens his resolve where his contract is concerned, and he finds his determination wavering. Can he possibly murder this woman, even if it does mean his mother’s safety and freedom?
Or can he find a third route—one that doesn’t involve the death of someone he loves?