Saw this move at age 8

I was born in 1966, I was 8 years old when I saw this movie. It is now 2007 and I finally saw this movie as I type this message after 33 years. I always did remember it as the first movie that had "PEOPLE INSIDE THE WALLS". Of course with hollywood they used that premise again and again with movies in the 80's like "PEOPLE UNDER THE STAIRS" etc. Was amazing to see it at age 8 in 1974 and then at age 40 in 2007. I did notice dabney colman as the father who after that did 9 to 5 and his rise to star. Kim hunter went on to do much more as well in the 80's but the rest of the cast faded into oblivion . If you liked this you might like the movie "ben". Its a kid that has a pet rat and the rat somehow turns evil and has all his rat buddies going around killing people. It was made the same year as this movie in 1974. Oops i mean 1972... I also remember this as a kid but have not seen it since then. 30+ years and there is no dvd :( Here is a link http://us.imdb.com/title/tt0068264/