People are being killed near a small desert community near the Mexican border, and a local sheriff investigates.
He is helped by a Leslie (Irene Kelly) a beautiful researcher who is writing a book on cults. Both discover that a weird religious cult is in the area conducting human sacrifices.
The local Sheriff is killed after seeing the group burn a Mexican woman alive. There are some pretty effective moments in this gritty film. I do suspect there were some parts either trimmed or cut out to secure a PG rating, but I can't be sure.
However, I would not let that deter you from seeing a unique regional film that is eerie and effective.
The print from Sinister is somewhat ragged, but that actually adds to the charm of this kind of film. It's available as a single feature or part of a Drive-In Double Feature with "Garden Of The Dead".