A Victorian James Bond... or just the n-th attempt at distracting the readers with period colour and detail so that they don't throw the book away?
If this was the case, didn't work for me. The characters are uninteresting, the period/place (London during the Napoleonic period) is not completely new, and introducing character X so that we can be "shocked" to find out that s/he is really Y trying to cheat the main character into doing Z is not exactly riveting.
There is a sequel. I think I'll pass....Continua