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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