In 1978 John Carpenter and Debra Hill gave us one of the greatest indie movies of all time in Halloween. It has become a true classic, the theme music iconically representing the season, and the blank stare of the mask now synonymous with evil.
The story goes that on Halloween night, when he was only six, little Michael Myers killed his sister Judith with a butcher knife. He then spent the next 15 years institutionalized, and his parents died in a car crash, leaving behind his baby sister named Cynthia. At the age of 21, Michael escapes the hospital and returns home to murder the last remaining member of his family. The guy is thorough.