The two sub-plots finally came together in an exciting climax which made the read thoroughly enjoyable. A little spy stuff, some intrigue, murder, and a lot of history make for an interesting stew.
My only criticism of the novel is the number of cliff-hanger chapter endings. I felt frustrated by having the story line cut off as the author did his tease. A few times I wanted to skip ahead and find out how the chapter ending was resolved but held myself back. The chapters aren’t long enough to make the wait intolerable.