Sax Rohmer 
Bat Wing 

Bat Wing is the prequel to Fire Tongue and is a welcome introduction to the character of Paul Harley, an English consulting detective, more along the literary lines of Poe’s C. Auguste Dupin than Doyle’s Sherlock Holmes. This well-written mystery deals with Haitian Voodoo, the death sign of a bat wing, and the lengths people will go through for vengeance.