hey everyone,

I need help finding this movie. Older movie buffs needed because it came out about 1974-1976 or so.It is based on a true story about a serial Killer with a sherriff trying to track him down. During most of the
movie he, the killer, is not shown. the movie is set in the 50's or 60's because I remember Old cars of that type. In one horrifying scene the killer has tied his victims up to a tree with Barbed Wire. the girl escapes
from the tree and finally the killer is caught. I was only 4 or 5 yrs old at
the time so I don't remember the title. But years ago I saw this movie
on video store rack so I know it's out there somewhere. I need to find the name of this movie.This movie is not In Cold Blood or THe Texas Chainsaw Massacre.I saw those and their not it.

Thanks ,Stumped in Kansas