Horror, Sleaze and Trash.

oddtruecrimefacts:

The Texas Chainsaw Massacre was influenced by Elmer Wayne Henley
Not only was Elmer Wayne Henley an inspiration for the Texas Chainsaw Massacre, but they also lost a day of filming when bodies from the Houston Mass Murders were discovered in the boat shed in Houston.  Gunnar Hanson, best known for his role as Leatherface in the movie Texas Chainsaw Massacre, heard about the Houston Mass Murders on the radio.  He then got the cast and crew together and they all listened to the story unfold and lost a days worth of filming.

One of the co-writers of the Film, Texas Chainsaw Massacre had this to say:
I definitely studied Gein … but I also noticed a murder case in Houston at the time, a serial murderer you probably remember named Elmer Wayne Henley. He was a young man who recruited victims for an older homosexual man. I saw some news report where Elmer Wayne … said, “I did these crimes, and I’m gonna stand up and take it like a man.” Well, that struck me as interesting, that he had this conventional morality at that point. He wanted it known that, now that he was caught, he would do the right thing. So this kind of moral schizophrenia is something I tried to build into the characters.