Spark

A goofy dog and the open relationship his girlfriend Diane insists on having are not the only issues Derek Sweet, bisexual private eye of the supernatural has to deal with. When an adult film actor is found dead, completely drained of his blood in the studio where he filmed, with unmistakable fangs marks on his neck, it appears clear that the murderer’s not human. Derek has always been driven by the sense of responsibility he feels because he was born with the power to perceive the creatures of the night around him and with the supernatural strength to fight them.
The case will make him confront uncomfortable truths and fears that''ll make him question himself and reconsider the nature of his relationship with Diane.
"The Spark" is a steamy LGBT urban fantasy novella and the first book in the bisexual vampire slayer series.