The True Story Behind 'This Is the Zodiac Speaking'

The sources explore the ongoing mystery of the Zodiac Killer, examining the evidence against Arthur Leigh Allen, a suspect in the case. The documentary series "This Is the Zodiac Speaking" presents new claims from Allen's former students and a family who knew him, including a potential confession. However, the validity of this new evidence is debated, highlighting the enduring mystery surrounding the Zodiac Killer and the lack of conclusive proof in the case.