In the late 1960s, a serial killer known only by the pseudonym "The Zodiac" terrorized Northern California, murdering at least five people and injuring two others in a spree that has become the most famous unsolved case in American history,. In this episode of pplpod, we re-examine the brutal timeline of attacks, from the shootings of couples at Lake Herman Road and Blue Rock Springs to the costume-clad stabbing at Lake Berryessa and the murder of a cab driver in San Francisco,.

Join us as we decode the killer’s bizarre cat-and-mouse game with the press, which included threatening letters signed with a crosshair symbol and four complex cryptograms sent to Bay Area newspapers,. We discuss the long road to cracking the "Z340" cipher—solved 51 years later in 2020—and the mystery behind the remaining unsolved codes,.

Finally, we  ...