The Zodiac Killer was never identified or found. The Zodiac Killer was an northern Californian serial killer responsible for the murders of six people in the late 1960s.
A number of investigators and researchers have claimed to have discovered the identity of the Zodiac Killer, but these claims have never been fully confirmed. Investigators often claimed that Arthur Leigh Allen, a California man who died in 1992, was responsible for the murders. The crime writer Robert Graysmith, whose book was the basis for the 2007 David Fincher film "Zodiac," has made the controversial claim that the Zodiac Killer was also responsible for a number of murders that took place during the 1980s.