Back in the old days of television, with no cable and only 3 channels available, I was still very lucky to be able to catch some fine horror gems like this one, along with other more-scary films such as 'Children Shouldn't Play with Dead Things' and 'Twisted Brain'. For years I never knew what the title of this film was, I just knew it was an invisible monster who screeched loudly and slashed people's faces & bodies apart! I loved the scene with the flour, where they had layed it across the floor, so you could see the creatures' foot-steps coming closer to them, holed-up in the cabin....it's a far-fetched film, but I loved it as a kid but could never place the title & never saw or heard of it again...until a few months ago! There is a video dealer in NYC who helped me discover its' title and I was able to buy it off ebay (oldies .com has it also) and am proud to have been able to find this old gem! It may not be for everybody, but there's something about a horror film, when seen as a kid or teen....it will always stay with you and to find it again is kind of like finding a lost love or family member! I give it 6 out of 10 stars ******