Undeniably unusual, even for the Underworld of Lore kind, Raven and Marcus find themselves having more problems than the missing Oath. Not knowing what is causing Raven to be different from all the known Underworld factions, along with being chased by darkhounds and witnessing Angels of Light and Dark fighting on this planet are only the beginning. Being a decoder, employeed by one of the most powerful Vampires walking this planet could turn out to be more than Raven bargained for. The Olesia Oath = Ancient manuscript bound in blood by four factions of the Underworld, that have vowed to keep themselves secret and protect human kind.