The darkest Dresden book by far. Morgan, a Warder of The White Court is framed for a murder of a fellow wizard. He is hunted to be executed on the spot. The only person who can possibly help him is happened to be Dresden. Yes, that same Dresden whom Morgan was intimidating for a long time trying to catch him doing black magic. As soon as Harry Dresden takes the case, a lot of powers come into play, including a few demigods - all against a poor Chicago's wizard PI.
This is also probably the first book which cannot be considered to have a conclusion; it ends with a minor cliffhanger. The book is entertaining and hard to put down with 4 star rating.