I saw this at the ICA in London, and have since never met anyone else who has seen it. It uses sound such as distortion, radio fuzz to describe the interior mind of the Peter Greene's character, a very disturbed schizophrenic. As a result it pushes the film further as you are sucked into the killers mind resulting in a difficult and powerful film to watch. One scene involving fingernails is something I had to look away from as it was simply unbearable to watch. This is not to say the rest of the film is similar but it is a well made portrait of a man on the brink and is an uneasy film. There are few films that depict characters such as this, in as powerful a manner. Most usually rely on graphic depictions of blood,this is far superior.