This film, introduced by Jonathan Rigby, is part of a Cigarette Burns Film Club season at the Barbican Cinema dedicated to the cult director Pete Walker. Full details here.
Time Out review:
With Frightmare following on House of Whipcord, David McGillivray's scriptwriting is undoubtedly having a marked effect on Walker's exploitation pictures. Where he used to settle for routine plots, his films now teem with demonic life, plus vicious and genuinely disturbing shock effects. Frightmare is about a psychopathic mum (Keith) who has the nasty habit of going at her victims with an electric drill before devouring them raw. It is far better written and acted than you might expect, and Walker's direction is on another level altogether from Cool It Carol! or The Flesh and Blood Show. The problem is that there is absolutely no exposition or analysis, no flexibility about the theme; still contained within a basic formula, it tends to leave a highly unpleasant aftertaste.
Here (and above) is the trailer.