Obsidian Butterfly : Paperback : Penguin Putnam Inc : 9780515134506 : 0515134503 : 15 Jul 2011 : Vampire hunter Anita Blake is forced into an uneasy alliance with Edward, a bounty hunter specializing in the preternatural, as she searches for a mysterious and evil force that maims, kills, and vanishes into the night without a trace.
