This is the Zodiac Speaking

This Is the Zodiac Speaking explores America’s most famous unsolved murders from a fresh perspective, through the accounts of individuals who worked on the Zodiac Killer investigation. The Zodiac terrorised California in 1969 with a series of killings, and what made the murders even more terrifying were his letters to the press.

The writings of the Zodiac Killer, published as the killings were taking place, are examined anew with the help of several experts. They search for hints as to what may have motivated the Zodiac to kill. The letters may also provide new theories about the identity of the American serial killer who was never caught. The experts also address the possibility that the Zodiac Killer could still be alive today, his identity a mystery that may never be revealed.