Emergence

Humanity knows vampires exist. What they don't know is how deep the corruption runs. Former cop Deacon Cain now hunts the monsters he once arrested. As a member of Perimore Corporation's elite Nox Squad, he tracks rogue vampires flooding the streets with venom-a seductive pheromone drug that turns humans into willing addicts. Deacon has no sympathy for the Night Children-the Nox. Until a mission goes wrong.
Hope Bradley is a Nox with dangerous secrets and a connection to Perimore that could shatter everything Deacon believes. She should be his prisoner. His enemy. His next collar. Instead, she feels like fate. Falling for her means betraying his oath, his squad, and the war he's sworn to fight. But if Hope is telling the truth, the real monsters aren't the vampires. And loving her might cost him his humanity.
Note: Emergence is a MF romance with a scene of MFM and MM interaction. Originally released with another publisher and has been re-edited for publication.