Oh my, what fun!!! I have to agree with everyone else on GR, this series just gets better as you move through the books.
Some of the things that I enjoy most about this series:
1. Harry - yes he's a bit macho, but he also knows his own weaknesses and freely admits when he's in over his head.
2. The author's sense of humour. I know it's sometimes still a bit cheesy, but Summer Knight definitely had me chuckling out loud.
3. The pace of the stories - there's almost no time to catch your breath and I'm kept guessing until the big reveal.
4. Lastly, the world creation. I love that Jim Butcher
has created such a detailed and complex world, and that he introduces you to a different part of this world in every book. In Summer Knight he acquints us with the Sidhe/Faeries. There are two different courts - summer and winter, and each court has three queens. It's amazing that he is able to share all this nitty-gritty without ever pausing the main story.
The Story: Professional wizard Harry Dresden is approached by the Winter Queen of Faerie to find out who murdered the Summer Queen's right-hand man. Soon, Harry finds out that the fate of the entire world rests on his solving this case.