Live And Let Bite

A 2017 Dragon Award Nominee for Best Horror Novel!
Marco is spiraling out of control.
He knows it. His team knows it. Everyone around him can see that he's just a bomb waiting to explode.
The only woman who can bring him back from the edge is also the woman who lit his fuse. Ever since the demon Asmodeus tried to murder Marco, Amanda Colt has been hunting down every lead to find the true evil behind the attack. Her investigation uncovers a vampire assassin that Amanda has faced once before - and she lost. Stronger than anything they've faced before, the assassin isn't alone. As Marco flirts with self-destruction and the armies of Hell prepare to descend, they must come together to stop a thousand-year-old assassin that has never failed.
Even worse, they must finally face up to their feelings for each other!