A thoroughly unpleasant, gruesome, dirty, and bloody film. Frightmare comes from director Pete Walker, who also collaborated on the script with David McGillivray. The cast includes Rupert Davies, Shelia Keith, Deborah Fairfax, Paul Greenwood, and Kim Butcher. Stanley Myers composed the music, and Peter Jessop handled the cinematography. The story centers on Edmund and Dorothy Yates, released after fifteen years in a mental institution due to their involvement in terrible acts. But has Dorothy recovered? And what about her daughters? Frightmare is exactly what it appears to be: a British exploitation horror aiming for maximum audience reaction. Despite what Pete Walker’s admirers might suggest, there's no underlying message or attempt to expand the limits of British horror through visual or thematic innovation. Walker, an approachable and straightforward person, has acknowledged that his films aren’t meant for intense thought processes; he was fortunate to be able to splatter blood and guts around and still get paid. The movie has a weak plot and feels like it exists solely to deliver shocking moments. The failings of the mental health system are briefly addressed, but ultimately the film progresses from one sequence to another in anticipation of Dorothy using her tools. This is where Walker shines, thanks to Keith’s genuinely frightening performance. Though not as terrifying now due to modern audiences' lack of sensitivity, there isn't actually as much gore as one might expect. It's quite simple at its core, but Walker succeeded in what he set out to do, and he deserves praise for providing a truly depressing ending. 5/10

Source on TMDB