Slow to start, the pace picks up about 1/3rd of the way in. I felt a little lost because there's a 15 year time gap from the first book, The Unbroken Line of the Moon, but it's quickly recovered.
The story is a fantastical depiction of the early Nordic cultural and power struggles that were amplified by religious conflict between the old and new. Blending mythological and historical "truths" makes for an interesting read.