Dead Beat by Jim Butcher

In this book Harry Dresden finds himself up against the heirs of the wizard who made World War II so bad--and they're looking to complete his worst magic. Furthermore, Dresden's actions are being curtailed by a blackmailing vampire of the Black Court. Despite these limitations, Dresden does what he does best in fine fashion. I'm really enjoying watching Dresden puzzle out what's right and what's morally acceptable for himself. A fine addition to the series.