This is another book translated from Swedish. Those folks seem to have as many demented people as we have here in the states. The violence and language are pretty graphic. This is a Cross and Switchblade book without the cross.
This is a good but graphic mystery.
The photos of the authors on their web site indicate two serious guys writing books about serious things.
This book may have been received free of charge from a publisher or a publicist. That will NEVER have a bearing on my recommendations.