 The demon decides that Denise could be useful to him, and brands her with his essence instead.Despite wanting nothing more than to be rid of the supernatural world forever, Denise manages to not only persuade Spade to help her but also falls in love with him.They eventually find Nathaniel, who has been held captive and used as a prostitute and for his demonically infused blood, which can be used as a narcotic for vampires, who cannot be affected by ordinary drugs.