Harry was a ghost in the last book. In this one, he is the Winter Knight trying to figure out a way to deal with faerie queens and their power struggle.
There are more enemies working in the shadow.
But he has friends and courage and weird sense of humor.
The book is a world created with balance of nature with Winter and Summer. With supernatural being wanting to harm him.
It is fun trying to find out what is the best solution.
And there are spells and familiar characters.
Like it a lot. With magic battles and colorful characters, fun.
Read this for Supernatural square.