The Consult: Real FBI Profilers 84. Profiling the Zodiac Killer – Listener Questions
6 snips
May 14, 2025 
Writer and researcher Michael Butterfield, a leading expert on the Zodiac Killer, joins retired FBI profiler Julia Cowley to tackle listener questions about this infamous case. They delve into the complexities of DNA evidence and the challenges of historical testing. The conversation also touches on the Zodiac's potential military background and how it influenced his cryptographic skills. Butterfield highlights the psychological motivations behind the killer's actions, including his need for control and validation, while exploring connections to other unsolved cases.
AI Snips
Chapters
Books
Transcript
Episode notes
Complex DNA Evidence Challenges
- DNA evidence in the Zodiac case is confusing due to partial profiles and multiple individuals' DNA found on letters.
- Law enforcement's lack of disclosure keeps the public uncertain about the DNA evidence's value and progress.
Military Theme in Zodiac's Profile
- Zodiac's military-style boots suggest a possible military connection but do not conclusively identify suspect.
- His knowledge of ciphers could come from military training or self-taught cryptography interests.
Paul Stine Shirt as Trophy
- Missing large pieces of Paul Stine's shirt sent with Zodiac letters could have been kept by the killer as trophies.
- Such trophies could serve as proof for Zodiac to confirm his identity if he resurfaced.
