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Zodiac Killer

The REAL Meaning of the Zodiac Killer’s Logo

Many speculate that the Zodiac Killer’s logo is a crosshair (Figure 1), given a gun was his weapon of choice, and others think his brand was inspired by a Zodiac watch (Figure 2). But why would both the killer and the watch brand adopt the same emblem? Interestingly, this symbol also represents a celestial Zodiac […]

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Zodiac Killer

A Map-Based Methodology

This article explores the hidden meaning behind the map sent to the press by the Zodiac Killer. Drawing upon clues from his Halloween card and other correspondences, this map unveils a possibility the Zodiac Killer was using a map-based methodology. Overview On June 26th, 1970, the Zodiac Killer sent a letter with his Mount Diablo […]

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Zodiac Killer

ArcGIS Mount Diablo Map

AZUnsolved created an ArcGIS to aid Zodiac theorists in deciphering the Z32 cipher using the “radians and number of inches along the radians” clue as well as the “set 0 to Mag N” clue on the map. It includes the killer’s map overlaying a foundation map, an early 1960s topographic map, location of the crime […]