Overview

• The Netflix series 'This Is the Zodiac Speaking' features interviews with the Seawater siblings, who knew Arthur Leigh Allen and claim he confessed to being the Zodiac Killer.
• Arthur Leigh Allen, the only person ever officially named as a suspect, was a Navy veteran and former teacher with a criminal past, but no definitive evidence links him to the murders.
• Despite the documentary's focus on Allen, his DNA did not match samples from Zodiac letters, and no hard evidence was found during multiple searches of his property.
• The Seawater siblings recount their childhood experiences with Allen, including trips to locations later connected to Zodiac murders, but these accounts remain circumstantial.
• Critics argue that the documentary offers little new information and relies on speculation, leaving the Zodiac Killer case unresolved.