Voodoo... There has always been something shadowy and sinister about it. The word alone conjures up visions of primitive dolls stuck with pins, mojos, animal sacrifices, wild dancing to beating drums, snakes, and powerful bones that can make a person drop dead for no apparent reason.    And then there are the zombies--the living dead who have lost their souls and blindly obey the will of their master--who are mindlessly trapped in their reanimated bodies after having been retrieved from their graves in the dead of night.     Featuring stories by famous authors H.G. Wells, H. Rider Haggard, and Robert Louis Stevenson, this book also includes many unknown and long lost classics that delve into voodoo's darkest mysteries, from its birthplace in the jungles of Africa, through the islands of the Caribbean, to the Louisiana bayous.    The lengthy introduction provides insights into the workings of authentic voodoo--the mysterious religion where devotees are possessed by the gods--while the remainder is designed to entertain; presenting some thrilling tales, perhaps to give you some chills and hopefully to make you look warily over your shoulder and wonder, what if?