** spoiler alert ** 
 A truly, truly enjoyable read. The mythology involving the last Romanov princess was a delight to read and Preble's writing brought out the best of all 3 main characters, Ethan, Anne and Anastasia. 
 My only gripe is the font used as Anastasia's handwriting for her letters was too cursive for my liking. It was very difficult for me to read and I had to really concentrate because Anastasia's letters had really important clues to the plot. 
 The ending was a satisfying one, but with regard to the development of Ethan and Anne's relationship, I don't see how it might warrant a sequel. The Anastasia plotline was resolved quite nicely here so unless there's more to the Romanov bloodline mystery thingy, I look forward to seeing what the sequel would bring. :D :D