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Throwback Thursday: The Zodiac Killer Pt. 2

Aug 20, 2026 · 42m

Summary

Host Vanessa Richardson and forensic psychologist Dr. Tristan Engels examine the Zodiac Killer’s psychological profile and the investigation of primary suspect Arthur Lee Allen. They analyze the killer’s coded letters, the 1970 abduction of Kathleen Johns, and the potential link to Sherry Jo Bates’ 1966 murder. The episode details how circumstantial evidence pointed to Allen, but DNA testing in 2002 ultimately exonerated him, leaving the case unsolved.

Topics discussed

Intro: Zodiac's coded letters and modern genetic genealogy Psychological analysis of Zodiac's letters and manipulations The abduction and escape of Kathleen and her infant daughter Zodiac's shifting tactics and threats to reporter Paul Avery Sponsor reads for Quince and Government That Doesn't Suck Sherry Jo Bates murder and the Zodiac's possible origin Arthur Lee Allen: Suspect profile and disturbing confessions Police interrogation of Arthur Lee Allen and the Zodiac watch Search of Allen's home, arrest, and ruling him out Conclusion: The enduring mystery and legacy of the Zodiac
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