Blood Angel 2: Charon. Blood Angel, #2

Charon is much more than a creature of darkness. Stripped of all humanity in order to fulfill his calling in Hell long ago, he lingers in the mortal world with no purpose to his existence. Bored of life, and death, he succumbs to the deep, protective veils of vampiric sleep. But when his former mistress calls to him from beyond the dead for vengeance, he is captivated by the alluring vision of a dark-skinned vampiress she wants him to destroy.
Aroused by more than just his mistress' avenging plea, he must also satisfy a blood debt he owes to her. Once more, Charon rises forth into the mortal world. Although a cold purveyor of death in his selfishness, his encounters with the intended target teach him that love is indeed possible for dark creatures such as them-but is love possible for him?