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The Zodiac Killer Letters: Ciphers, Authenticity, and Geographic Clues

The Zodiac Killer Letters: Ciphers, Authenticity, and Geographic Clues

Decades after the Zodiac killings, some of the ciphers are cracked and some still resist every attempt. These approaches differ on where the truth hides: verifying which letters are authentic, reading the solved codes for clues, wrestling with the short ambiguous ones, or chasing geographic hints like the Mount Diablo bearings. Following them shows why some secrets fell and others may never.

Zodiac · 60 stops · ~120 minFree
The Voynich Manuscript: Evidence, Symbols, and Origins

The Voynich Manuscript: Evidence, Symbols, and Origins

The Voynich manuscript has resisted every attempt to decode its strange script and illustrations. These approaches differ between a multidisciplinary attack combining dating, art history, botany, and cryptography and a focused analysis of the manuscript's unique symbols and structure. You can weigh which path offers the most convincing read on its origin and meaning.

Voynich manuscript · 40 stops · ~80 minFree