Jim Butcher . Small Favor. 2008. The tenth book in the Dresden Files series. The translation was not published by .. Those who read the series first know that Harry Dresden was lucky enough to get into debt to Queen Mab. At first he owed her three favors, at the beginning of this book - two. And now Mab demands the return of the old debt. She calls it a "service," I'd call it "extortion," but I wasn't asked.. So Harry has to get involved in a new story, especially since in fact this story was twisted and dragged him into himself even before the appearance of the winter queen.