The depth of research in Holsinger's books is astounding. The language is dense and sometimes obscure (which enhances the strength of the research), but the plot is well paced and enjoyable to read. Some passages were so dense that I had to go over them twice, but that did not diminish my enjoyment of the book. It is one of those books that feels somewhere between a novel and non-fiction, and it is in some places in danger of getting bogged down in the historical detail, but I would definitely read a third book in this series if there was one.