Fool Moon by Jim Butcher

With the Dresden books, you can always be confident that the title fits the story - even when it is a pun. Fool Moon - Full Moon - and the story is about -- have you guessed? Of course, you have - werewolves. It seems that there are several types of werewolf, and they all appear in the story. I do not propose to enlighten you on the subject. Read the book.