Demetrius (New Vampire Disorder (Paranormal Romance) Book 1)

As if overthrowing the vampire government and implementing a new council to make vampires, shifters, and hybrids play nice wasn’t enough, Demetrius Devereux finds a bigger problem to deal with in an innocent, stubborn, and privileged beauty.
Callista Augustus is the over-protected daughter of a once-powerful vampire leader. Discovering her desperate father has tapped into a well of pure evil, Calli swallows her sense of betrayal and turns him in. She almost regrets it when she meets the infamous and arrogant Demetrius. Forcing herself to work with the male who ruined her family, Calli's only concern is saving her father.
When Demetrius gets past the infuriating personality of the righteous female, he realizes Calli's the one in great danger. He gives her his help out of duty, until it becomes clear that if he loses her, he loses everything.