High Quality Content by WIKIPEDIA articles! Obsidian Butterfly is the ninth in the Anita Blake: Vampire Hunter series of horror/mystery/erotica novels by Laurell K. Hamilton. Obsidian Butterfly continues the adventures of Anita Blake. In this novel, Anita travels to New Mexico to investigate a series of supernatural attacks as a favor to her long-time friend, the assassin Edward. In the course of that investigation, Anita picks up many clues as to the enigmatic Edward's life and past, comes in contact with an alleged Aztec god, and attempts, as always, to sort out her own relationship with Jean-Claude and Richard. As with the other novels in the series, Obsidian Butterfly blends elements of supernatural and hardboiled detective fiction.