Late 70's early 80's swamp monster TV moive
I am trying to remember the name of a TV movie I saw either in the late 70's or early 80's. The story line as I remember it was a man and woman in a cabin on a small lake or swamp terrorized by some sort of swamp/lake creature. I remember watching it one Friday night way back when and I was pretty scary at the time. I think they killed the monster using salt or something like that. I know this is kind of scetchy but it was a long time ago and as far as I know it was only on once. I want to say it was on CBS or ABC. Thanks
