No,the movie IS NOT based anything remotely real except for the part with Ed Gein. The whole urband legend is just that an urban legend....they say it is based off a true story but it is not. It is to get better ratings and a better turn out.
Sucks to be you Kate if you got stuck sitting next to a guy like that.
Now saying "Based on a true story" doesn't actually tell us what part of the movie is real or not. I say none of it really happened. Producers might just say that with very lil actually being real to like I said,boost viewings.