Director: Phil Lott, Ari Mark
Decades after the Zodiac case went cold, a documentary series revisits the evidence pointing toward Arthur Leigh Allen and the family whose unsettling ties to him kept the theory alive.
What is This Is the Zodiac Speaking about?
This Is the Zodiac Speaking builds its case around a family whose relationship with Arthur Leigh Allen grew increasingly disturbing over the years, and whose testimony forms the spine of the series. Interviews trace how physical evidence, letters, and long-buried personal accounts intersect with the unsolved Zodiac murders that terrorized Northern California starting in the late 1960s. Journalist Robert Graysmith, whose own investigation shaped decades of public fascination with the case, and reporter Paul Avery both factor into how the story reached the public eye originally. Rather than simply recapping old headlines, the series leans on fresh interview footage and archival material to walk through why investigators and amateur sleuths alike kept circling back to Allen's name for so long.
Cast & crew
The series centers on real figures connected to the case, including Arthur Leigh Allen as the central suspect, journalist Robert Graysmith, reporter Paul Avery, and Rita Williams, a family member whose account anchors much of the narrative.
Context & significance
Directed by Phil Lott and Ari Mark and produced with input from filmmaker David Fincher, whose own 2007 feature on the case remains a reference point, the 2024 documentary arrives at a moment of renewed public interest in cold cases reexamined through modern forensic and journalistic lenses. Episodes run around 45 minutes and lean on first-person interviews rather than dramatic reenactment, giving the series a more grounded, reportage-driven feel than earlier dramatizations of the case.
Where & how to watch
This Is the Zodiac Speaking is available on K-Time with Persian dubbing and Persian subtitles, making the true-crime series accessible to Farsi-speaking viewers. Streaming requires only a K-Time account login, and the site's Farsi-first design makes browsing and watching straightforward for the diaspora audience.