Darkest Heart

Sonja Blue's "inner demon" is a vampire that is ruthless and demands human blood and great sacrifice. This personality takes control, and Sonja dreams the events in nightmares that she discovers are real.

Yet Sonja the vampire is also a vampire hunter, and wants to rid the world of these dark hearted villains, which would ultimately mean she also must die after the last vampire does. She dares not have close attachments to any mortal, for when the fiend inside her gets free, the man or woman Sonja has learned to care for will be attacked, and then lust, and desire addict them to the vampire's blood. It is their blood that heals her and their only release is death, and they are so caught up in the hunger for her they do not mind.

Now Sonja is the target of a vampire hunter named Jack Estes, and an ancient vampire with the darkest heart. Jack is human, he would destroy Sonja, therefore, and she must convince him of her nature -- and will have to reveal its duplicity, which keeps him in danger at all times.