Zodiac Speaking The BIG Mac Update
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May 24, 2025 
Andrew Osborne, a dedicated Zodiac researcher and Citizen Sleuth, joins to discuss a promising new suspect known as Mac. They delve into shocking discoveries that link Mac to key locations and events tied to the Zodiac Killer. The conversation explores eerie coincidences, family ties, and potential historical connections that deepen the mystery. They also analyze how Mac's life and behaviors could fit the profile of the Zodiac, raising questions about forgotten evidence and the intricacies of the investigation.
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Mac's Mysterious 1968 Timeline
- Mac is inconsistently reported as studying in Chico, but draft records contradict student deferment.
- The period of Zodiac murders corresponds with a lack of verifiable information on Mac.
Physical Trait Debates Re Mac
- Differences in ear size and shoe size between Mac and Zodiac sketch are weak objections.
- Boots size difference is minor and hand dominance is ambiguous; neither strongly rules Mac out.
Eyewitness Description Variability
- Witness descriptions about Zodiac’s age, face shape, and hair often conflict and may be unreliable.
- Mac fits multiple sightings better when considering variability in observer estimates and Zodiac's changing appearance.