A nearly perfect book that is as perfect a mystery story as anything in that genre with the added bonus of a fabulous fantasy world setting.  

I am refraining from the full 5.0 for purely personal reasons which is that I would have enjoyed more of the Struvos character and the relationship with our main character Din.  Perhaps he will be a recurring character. 

The ending of the novel leaves more questions than answers as the mystery is technically solved but leaves us with a new adventure for Din and Ana.  And in revealing more about her we understand less about her background and motivation.