Three girls on the way to a concert crash their car in a rainstorm on a desolate country road. They wake up in the house of a very homely but apparently kindly young spinster. At dinner they meet her invalid mother who has a pathological hatred of men (after her late husband was caught molesting a young girl) and is convinced that her daughter is secretly carrying on under her nose with various men in the deserted house. The old lady seems crazy, but the guests soon realize that there does seem to be a strange man lurking around. . .
Ironically, this movie has become well-known because it was once considered a "video nasty" and banned for many years in Britain even though it has only three (admittedly very violent) killings, which has to be some kind of record for these type of films. It is actually one of the few post-"Friday the 13th" slasher movies that is more interested in creating an eerie atmosphere and truly intriguing mystery than in racking up a high body count of hapless teenagers. (IMDB lazarillo)