The Prowler (1981)

EDIT: I watched this the year before as well, unsure if I referenced this error elsewhere on here or even noticed until just now in 2022.

The Prowler (also known as Rosemary’s Killer and The Pitchfork of Death internationally) is a 1981 American slasher film. The film follows a group of college students who are stalked and murdered during their graduation party by someone wearing a G.I. uniform. The killer is depicted as a war veteran from World War II, and responsible for killing his ex-girlfriend in 1945. In 1980, he goes on a killing spree at the anniversary of her death…says Wikipedia, and thats pretty much it. People run around and occasionally there is some rather intense kind of out of place gore. 2 stars.
Wikipedia

The Serpent and the Rainbow (1988)

The Serpent and the Rainbow is a 1988 American horror film directed by Wes Craven. The script is loosely based on the non-fiction book of the same name by ethnobotanist Wade Davis, wherein Davis recounted his experiences in Haiti investigating the story of Clairvius Narcisse, who was allegedly poisoned, buried alive, and revived with an herbal brew which produced what was called a zombie. I wish this had been just a bit more supernatural. Its more like a serious drama with the fact creating zombies via Voodoo is a real thing. 2 stars
Wikipedia