Ed Gein The Real Leatherface Serial Killer (2013)

Ed Gain is considered to be the very original American Psycho. Even though it is disputable whether label Serial Killer suits Ed Gein well, since he was only convicted of murdering two people, the severity and notoriety of his murders as well as necrophiliac tendencies have directly influenced some of the most famous horror films, including The Texas Chainsaw Massacre, The American Psycho and The Silence of the Lambs