Detectives are closer than ever to identifying the Zodiac Killer who terrorized Northern California in the late 60s thanks to the same DNA technology that exposed the alleged Golden State Killer Joseph James DeAngelo, right. The Zodiac Killer, sketched left, stabbed or shot at least five people in Northern California in 1968 and 1969 and taunted investigators with coded letters about the attacks, one of which is shown inset. Two of the letters that may contain DNA were sent to a lab last month.