As the seventh installment in the Dresden Files opens, Chicago wizard Harry Dresden`s biggest problem is that his roommate, his vampire/incubus half-brother Thomas, won`t clean up after himself or feed the cat and dog. But things get much worse fast. Harry has three days to find the Word of Kemmler, the supreme spellbook of a powerful and incredibly evil necromancer responsible for World War I, or the vampire Mavra will destroy the career (or possibly the life) of Karrin Murphy, head of the Chicago Police Department`s Special Investigations department--and Harry`s unrequited crush. Naturally, several other sinister beings have their eye on the book as well