Blood Rites by Jim Butcher, the sixth book in The Dresden Files, focuses on the battle between Harry Dresden and the Black Court vampires. The foes that Harry faces are formidable but things are complicated when Harry discovers that he has a half brother who is a member of the White Court vampires. The power of love becomes a central theme for the story as Harry is forced to face his past and realize that his future will be changed forever.

Harry Dresden is running from a group of demons that are after some sacred Tibetan dogs. Harry manages to defeat the demons and while returning them, Thomas Raith, a member of the White Court vampires, asks Harry for a favor. Harry agrees to help Thomas' friend, Genosa, with the understanding that Thomas explains his reason for helping Harry in the past.

Harry is going to meet Genosa when he is attacked by Black Court vampires. Harry realizes that Mavra is out to get him but for now he cannot do anything about it. When Harry meets Genosa, Genosa explains that women around him have been dying in odd manners and that he believes a curse is to blame. Harry agrees and they decide to put him on the set of Genosa's film to see if he can decipher who is behind the attacks and keep people safe. Harry agrees.

Harry goes to the set and it is not long before people are attacked. Harry is able to stop anyone from dying but he knows now that whatever is responsible is very deadly. Harry soon finds that Thomas and his family are somehow involved with Genosa. Thomas then reveals to Harry that they have the same mother, although Harry is reluctant to believe this.

Once Harry learns where Mavra is hiding, Harry gets his crew together for an attack. To help him, Harry calls a mercenary named Kincaid, Karrin Murphy, a police officer and friend of Harry's, and an old man named Ebenezar who raised Harry after Harry's uncle died. They go to Mavra's and are able to save the hostages and kill the vampires and human servants working there.

With the threat of Mavra gone, Harry can concentrate on the curse and soon deducts that Thomas' father, Lord Raith, is responsible for the curse with the help of Genosa's three ex-wives. Harry goes to Raith manor to save Thomas and is captured by Raith. Harry figures out that his mother was able to set a curse on Raith so that he can no longer feed. Harry tricks Raith into admitting that family is nothing to him and Raith's daughter, Lara, arrives to confront her father. Lara now knows that she is stronger than her father and takes over the House of Raith but keeps her father in his position of power.

Thomas goes home with Harry to stay. Harry feels that a lot is changing and is happy to know that he has family now.