Blood Cult (1985)

A mysterious serial killer is killing several female co-eds on and off a college campus in Oklahoma and the only clues are gold medallions left by the bodies. A grizzled police detective sets out to find the killer, but is unaware that all the killings are connected to a Satanic cult. The detective, Ron, turns from the hunter to the hunted when he sees that no one around him can be trusted, not even his own daughter.