Ever since former NYPD detective Nick Carter and 200-year-old vampiress Ruby set up their private agency for preternatural crime, things have been heating up both at work and at play. Yet Nick's refusal to share the ultimate intimacy with Ruby is putting a strain on their otherwise passionate relationship, a strain which may lead her dangerously astray. When a new, mysterious vampire arrives in New York and begins leaving the bodies of young girls as messages for Ruby, her past and her future become inextricably entwined.