The hero bumbles around a lot and doesn't get an opportunity to shine while the heroine was strong and awesome. Overall, the historical feel was missing for me, not sure if due to how the heroine was living her life or what but I missed it. The hero just wasn't a strong presence for me and the mystery part of the story felt a little vague and over with earlier on. The author's writing is incredibly strong and I enjoy it but I almost feel like she would be a better fit in contemporaries.
Embarrassingly, I spent a good portion of the latter half of the story fantasizing about Beatrice and King having their own book. Or maybe Captain Black and Beatrice, I think either of those two would be an amazing match for her.
Either way, gimme King's book!