April 20, 1970: Zodiac Sends 13-Character Cipher
Today in True Crime - A podcast by Parcast Network
On this day in 1970, the notorious Zodiac Killer sent one of his most disturbing communications to the San Francisco press. The letter not only held the key to the killer’s identity, but also included a detailed bomb threat that terrified the public. Learn more about your ad choices. Visit podcastchoices.com/adchoices
