Wizard-for hire and private investigator Harry Dresden takes on a case in response to a request by his sometimes-acquaintance and White Court vampire named Thomas. White Court vampires don't feed on blood. Instead, they hunger for lifeforce, which they are able to pull from their victims during the height of passion.

So, it should not be a surprise to Harry when he learns that he is going to be working at the set of of porn movie with the hopes of learning who put a hex on the the owner, Arturo Genosa, of the production company. Each attack leads to some serious harm (or death) for someone working on the set.

It does not take long for Harry to figure out that whoever is setting their targets on Genosa is hoping to prevent the movie-maker's new production company from succeeding.

In the process of investigating, Harry also learns about some mysterious secrets from his familial past that is going to help him define where he came from, who he is, and a realization that he is not necessarily as alone in the world as he always thought he is. His newfound family may also be the key to what he needs to solve the case and save as many people as possible in the process.

I really love Harry and his sarcastic sense of humor, which seems to lend a surprising amount of realism to the events in the books. He is a powerful wizard, but he never seems to have trouble sharing how overwhelmed he sometimes feels when in these sticky situations. What was really interesting is that Butcher is able to present this unique, sex-filled plot while avoiding the need to be graphic.

Readers are once again able to hang out with not only Harry and Thomas, but also Detective Karin Murphy, Bob the spirit/demon bound to a skull and serves our hero in the place of a computer, and a new puppy that appears to be taking on an important role in the series.

Humor, grossness, and mystery sums up this book (and the series as a whole) in just three words.