Sax Rohmer 
Return of Dr. Fu-Manchu [EPUB ebook] 

He was the most brilliant man alive; his very existence a scientific miracle. Yet evil was his nature and evil was the only end he served. Nayland Smith and Dr. Petrie, the sworn enemies of Fu Manchu, had little knowledge of the dangers that awaited them. For the evil Doctor had one weapon in his fiendish arsenal from which there was no escape: the love of a beautiful woman. "The Return of Dr. Fu-Manchu" was written by Arthur Henry Sarsfield Ward, known better under his pseudonym, Sax Rohmer. Sax Rohmer was a prolific eng novelist. He is best remembered for his series of novels featuring the master criminal Dr. Fu Manchu. (Excerpt from Wikipedia)