'Nightwish' (1989) – Bruce R. Cook.

A shady professor of parapsychology (Jack Starrett) and his twitchy students disturbingly discover that the notorious property they are investigating is haunted by something far more sinister than a restless spirit! This blissfully bizarro 80s Sci-horror romp is quite a trip, and features a memorably charismatic performance from muscular man biscuit Brian Thompson. Are the collegiate researcher's increasingly distressing experiences merely vivid hallucinations, the sinister subterfuges of a malevolent supernatural entity, or gloopy proof positive of grotesquely cannibalistic, human cloning space aliens? All will most certainly not be revealed at the refreshingly oblique conclusion of Bruce R. Cook's surreal, playfully eccentric Sci-splatter extravaganza. There's a fabulously tweaked Altered States, Videodrome meets Chariots of The Gods quality bubbling throughout which gives Nightwish a tangy WTF edge over many of today's more prosaic, dully recycled horror films. 

"Bill was alive, but I had to split his head open!!!!"