This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
In 1982 a young Harvard trained ethnobotanist named Wade Davis traveled to Haiti to investigate a specific medical claim, that a man named Clairvius Narcisse had been declared dead, buried, and later found alive, walking the countryside years afterward. Davis spent months among houngans and bokors, tracing the pharmacology and the social world behind reported cases of zombification. His 1985 book, The Serpent and the Rainbow, published by Simon and Schuster, laid out a theory that a specific poison, drawn from puffer fish and other ingredients, combined with cultural belief and social control within Vodou communities, could produce the state people described as zombification. The theory itself became scientifically contested. Other researchers reported finding little or no tetrodotoxin in the samples Davis supplied, and questioned the causal chain he proposed.
What is not contested is what happened next. Universal Pictures optioned the book, and Wes Craven directed a 1988 adaptation, working from a screenplay by Richard Maxwell and A. R. Simoun. Davis served as a technical advisor and was present from early in the shoot. He did not like where the story went. Bill Pullman, who played the lead, and Craven himself both later said they had wanted a more serious film than the one that resulted, one that traded Davis's careful fieldwork for a bokor sorcerer, a burial alive, and a third act built around violence and escape. Roger Ebert, reviewing the film on its release, credited Craven with treating Haitian Vodou more seriously as a religion than most horror films manage. The scholarship survived the adaptation only partway.