This book leaves me in a quandry. I enjoyed the author's writing style. I felt compassion for the characters. The story flowed well and kept my interest - to a point. I think the plot was certainly implausible. The ice age climate was a good backdrop for the story. However, I think it would have been more believable and enjoyable if the trolls were not a part of the story. There is so much that could have been done with the Norsemen rather than bring in the giant trolls. I would have much preferred a futuristic thriller with a historical rather than a mythylogical basis. I will read more by this author.