Harry Dresden , Chicago's only professional magician , had worse tasks than to identify hidden on the set of an erotic film about the escape from a burning building full of irate monkeys demons or the confrontation with a plant monster. Nevertheless, his current case has something disturbing in itself . The producer of the film adheres to the victim of a sinister Entropiefluchs , but in fact it is the women around him who are dying , on increasingly spectacular fashion. Harry is doubly frustrated because he has just embarked on this case to , his selfish , constantly flirting vampire acquaintance whose integrity is beyond not just beyond any doubt , do Thomas a favor. This has a personal interest in the case , the Harry can not understand , to lead him directly to his investigation Thomas sex-obsessed vampire family . Harry discovers that Thomas family tree harbors a shocking secret , a discovery that will change his life forever.