Perhaps the biggest revelation in the Netflix documentary This is the Zodiac Speaking comes via the Seawater siblings sharing that Leigh Allen confessed to being the Zodiac killer to them. David and Connie Seawater also claim Leigh Allen drugged them as children and may have even brought them along to the killings.

Arthur Leigh Allen is the prime suspect in the unsolved Zodiac Killer crimes, though his fate may prevent justice from ever being served.

As a documentary series revisiting the infamous tale of the Zodiac Killer, with a special focus on its prime suspect, Arthur Leigh Allen, Netflix’s ‘This is the Zodiac Speaking’ is truly gripping. That’s because it incorporates not just archival footage but also exclusive interviews to shine a clear light on why many consider him to

The Zodiac Killer was connected to several murders in Northern California during the 1960s, earning his cryptic name by sending taunting letters to local newspapers that threatened killing sprees if they weren't published.

Netflix documentary This is The Zodiac Speaking takes another look at the horrific murders of The Zodiac Killer. We look at the prime suspect in the case, Arthur Leigh Allen, and what happened to him in the aftermath of the killings.

Explore the new evidence in the Zodiac Killer case as the Netflix documentary "This Is the Zodiac Speaking" examines Arthur Leigh Allen's role as a suspect.

People who knew Arthur Leigh Allen as children say he confessed, drugged them, and brought them to the sites of Zodiac killer murders

Arthur Leigh Allen has been the only publicly identified suspect by the police, however there was never enough evidence to charge him. Therefore, it cannot be confirmed whether or not Arthur Leigh Allen was the Zodiac Killer. In the documentary, the Seawater siblings claimed that Allen confessed to being the Zodiac killer.