Sax Rohmer 
The Hand of Fu Manchu [EPUB ebook] 

Dr Fu-Manchu is back once again! His very existence seemingly proves him immune from natural laws, a deathless incarnation of evil! Brand new editions of the world-famous novels featuring one of the most iconic characters of the 20th Century, standing alongside Sherlock Holmes and James Bond.
And this time the Devil Doctor is not alone. Sir Denis Nayland Smith and his associates learn of a deadly organization that stalks the shadows. Their goal is to undermine the balance of global power, and they allow no one to stand in their way. They are the terrorist assassins known as the Si-Fan. 
‘The hand that held my arm was bony and clawish; I could detect the presence of incredibly long finger nails—nails long as those of some buried vampire of the black ages! Choking down a cry of horror, I opened my eyes… and looked into the face of my guide. It was Dr. Fu-Manchu!’