In the vampire world the Covert has been around for hundreds of years. They take girls off the streets and then sell them to vampires who are looking to "collect" women for unpleasant purposes. It is a nasty business, but vampires see humans as objects. Buying one from the Covert is like adding another car to your collection. It wasn't uncommon to hear another girl go missing off the streets, but when girls from well-known families begin to disappear, the Supernatural Crime Division begins to take notice. Blake Noble is assigned, by her superior, to investigate the disappearance of his niece and to take down the Covert. Blake, being the daughter of Lucifer and a famous vampire mother, uses her abilities to survive through the investigation. Between demon lessons from her father and falling for the Deputy Director, she tries to find a way to take down a several hundred year old business. Only she soon realizes people she trusted are involved.