Viral Video ‘I am not afraid’: Serial murderer Zodiac Killer’s chilling code decoded after more than 50 years The Zodiac Killer is an unidentified serial killer who terrorised northern California in the late 1960s. Scroll Staff Dec 12, 2020 · 05:53 pm Play Support our journalism by subscribing to Scroll+. We welcome your comments at letters@scroll.in. Crime america