This was a pretty fun one, a suitable number of twists and turns and I enjoy the entire lack of self-awareness on the part of the author. You have to have something of a willingness to either forgive, overlook, or accept the racism apparent in this kind of Yellow Peril book. E.g.:

Or:

And quite frequently:

You've just got to kind of let this happen, I found myself guffawing incredulously at the way he describes anyone that's not a white Englishman quite often. I do find it to be a very interesting snapshot into the life and mindset of the time, and it's a fairly fun yarn as well if you can overlook the author's prejudices. 

I didn’t enjoy this as much as the first one. The racism/xenophobia is still a big negative and this time Fu Manchu’s plots didn’t seem fiendish and inventive enough to be a positive. I mIght still read number three though, as it’s free on Project Gutenberg.