There's a horror movie made in the 80's or late 70's about a creature in a house. I was very young when I watched it so the only memory of it is the following.
Toward the end of the movie:
You see that the creature is in the basement or someplace like the basement; dark slimy.
The creatures big and worm like or mainly a large mouth with teeth and no eyes.
It successfully breeds so you see smaller versions infesting the house.
Memorable scene involves a young woman with her back towards the window and the creature or another one large enough to engulf her head and as it rips it off, her body drops out of the window in broad day light.
I thought the movie was called parasite but the only one I found around that time casted Demi Moore and it's set in the future.
Help me out with a title please!
