***Unpleasant big city crime drama with Martin Sheen that morphs into sorcery-oriented horror*** A widowed therapist (Martin Sheen) moves back to New York City to find himself assisting the NYPD in a series of slayings linked to a Caribbean Voodoo-like cult. Things get worse when he discovers they want his son for a human sacrifice. Helen Shaver plays his landlord and possible romantic interest. “The Believers” (1987) is an adult-oriented crime drama that gets increasingly horrific. The plot and tone are akin to “Wolfen” (1981), albeit with the brujería cult replacing the super-wolves. It’s leagues superior to the similar “The Serpent and the Rainbow” (1988). The diabolic angle makes for some ugliness (e.g. death due to electric shock, suicides, grisly sacrifices, snakes and creepy arachnids), but there are rays of light as well. Sheen is outstanding as the protagonist while Shaver offers her wares to the table. The shocking spider sequence was later ripped off by "Urban Legends: Bloody Mary" (2005). The movie runs 1 hour, 44 minutes, and was shot in New York City & Toronto. GRADE: B-