Arthur Leigh Allen, a schoolteacher who died in 1992, is the only person police ever named as a suspect in the Zodiac murders.

Below, find all the evidence that was not presented by points to Arthur Leigh Allen being the true Zodiac Killer.

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.

Over the weekend, yet another Netflix true crime documentary, "This Is the Zodiac Speaking," topped the platform's streaming charts.

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

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

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.

Who was Arthur Leigh Allen? Here's what the Seawater family says about the Zodiac Killer and if the Zodiac Killer has ever been named.

This is the Zodiac Speaking is actually one of several true-crime documentary shows to highlight a murder mystery that puzzled real-life authorities.