My abiding memory is of some chap incarcerated in his living room, ringing into some radio show and having something nasty getting nearer and nearer...and nearer. You never saw anything, but then again you never had to.
Even the word 'beasts' takes us all back there doesn't it? I try and be objective. I saw this in late 1976, and never since. I was 9 years old, hardly capable of critical reasoning. Yet, across the gulf of time, images and thought processes immeasurably superior to adulthood come back to you.
I'd like to watch it now, provided it don't ruin it.