Blood Rites

Harry Dresden, a wizard and private investigator in Chicago, owes a favor to Thomas Raith, a White Court vampire and an uneasy friend. Thomas asks him to look into a pornographic film production run by the director Arturo Genosa, where women connected to the shoot keep dying in gruesome, magical ways. Genosa believes the set is cursed.

Harry takes a job as a production assistant to work the case from inside. Suspects turn up on every side. As he digs, the trail leads through the White Court's royal family and toward the oldest secret in his own life.

Meanwhile Harry is also working to bring down a Black Court vampire nest led by the ancient Mavra, who has been holding children captive. Lieutenant Karrin Murphy, the mercenary Jared Kincaid and his mentor Ebenezar McCoy join him for a raid. It will cost him dearly.

This is the sixth Dresden Files novel, first published in 2004, and it follows Death Masks and comes before Dead Beat. The mystery moves fast and the humor runs dark. What happens here carries consequences into later books in the series.