Where Evil Dwells(1985)

Loosely based on an infamous 1984 Long Island murder case involving Satan-worshiping, teenage drug freaks (Knights of the Black Circle), David Wojnarowicz and Tommy Turner’s Where Evil Dwells is a low-budget D.I.Y. movie that walks the jagged lines between splatter flick, experimental film and transgressive art. The original footage was destroyed in a fire and the only footage that survived is this 28 minute preview that was put together for the Downtown New York Film Festival in 1985.

Official site