Birdy Wemys(Anne Todd) and her son Kenneth(Tony Beckley) live in a big house, and are also devoted followers of a controlling Evangelical minister(Patrick Magee). The house is also the meeting place for the followers of the religion. Kenneth is a severely disturbed man who when not working as a security guard or hiding barely repressed desires for his mother, he spends his time slaying various women who he considers unclean or sinners. A journalist friend of Mrs Wemys's new nurse senses an expose of the minister and his religion, and posing as a convert gains access to the house, unaware that a murderer lives within its walls.
The director of this film Robert Hartford-Davis was also responsible for the great sleazy British horror 'Corruption'. This effort is very modest in comparison, despite containing a couple of great performances from Beckley who plays Kenneth as a ticking time bomb of sexual repression and morbid compulsions(in fact he steals the film whenever he's in a scene) and Magee as the blinkered priest. The scenes that work the best are when the religious service cuts to one of Kenneth's brutal murders and back again. This film is also unashamedly vitriolic in its scorn for religious fundamentalism, as all the religions followers are portrayed as weak, mad or psychotic.
The film also has a great visual style used to good effect in the oppresive house. However the film does drag in places, especially when Beckley or Magee are not on screen, and the murders and sermons get a bit repetative after a while.
So to sum up an interesting, not entirely successful attempt to cross horror with social commentary, best enjoyed as a straightforward psycho thriller. 3 out of 5