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Richard Grinell, Coventry, England
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THE GEOGRAPHY OF CRIME AND PROFILING EVIL

12/10/2020

 
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The movements of a killer before, during and after a crime can tell us so much about that person, without them even knowing they could be mapping out their own demise. If we can identify a killer's "anchor point", then we have a valuable location from which to springboard the rest of the investigation. An "anchor point" could be the killer's home location, place of work, or the number 48 bus terminus he used to commute to the neighborhood or city. It is effectively the art of using human nature against the person you are seeking for the crime. That person leaves a fingerprint on the map, which can then be analyzed to produce "hot zones" of particular interest. The "anchor point" could be the home residence of the killer, so identifying an approximate area where the killer may live is invaluable in focusing an investigation, often when resources are finite  This "anchor point" can often be the comfort zone (or area of familiarity)  that the killer will invariably retreat to after the commission of a murder.

In the case of the Zodiac Killer, we have Springs Road & Tuolumne Street, 1231 Main Street, Lake Herman Road, Blue Rock Springs, Lake Berryessa and Presidio Heights as our bedrock. We then have his movements subsequent to each crime, the hour each crime was committed, and the wording he used in his letters describing each crime. Everything tells you something about the killer. We can utilize geographic profiling tools such as distance decay, target backcloth, buffer zone and the least effort principle (to name but a few), and use these in identifying the possible home location of the Zodiac Killer. Techniques that our killer would have been unaware of in 1968 and 1969, other the a rudimentary knowledge of preservation and deflection.

In two extremely informative videos on the Profiling Evil channel [1] [2], Dr. Spencer Chainey uses the "geography of crime" to examine several crimes. He demonstrates some of the above principles and a lot more besides, while showing us how police were able to identify Levi Bellfield, a serial killer from London, England, who was responsible for the murders of Marsha McDonnell, Amélie Delagrang and Milly Dowler between 2002 and 2004. He then covers the sexual assaults in Bath, England in 2004/2005 perpetrated by Adrian Warburton, along with the "Irvine Chair Burglaries" in Orange County over a period of two years, in which Raymond Lopez was eventually arrested in 2005. The "geography of crime" in each case, pivotal to apprehension. In the second video he analyzes the murders of "Jack the Ripper", who terrorized the streets of Whitechapel in London, England in 1888, again using maps to show us how the geography of his murders speaks volumes to where he likely lived. This tool is so undervalued in the Zodiac case.

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    The Zodiac Killer may have given us the answer almost word-for-word when he wrote PS. The Mt. Diablo Code concerns Radians & # inches along the radians. The code solution identified was Estimate: Four Radians and Five Inches To read more, click the image.
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    The Zodiac Atlas: The Zodiac Killer Enigma by Randall Scott Clemons. Click image for details.
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    The Zodiac Killer Map: Part of the Zodiac Killer Enigma by Randall Scott Clemons. Click image for color version
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Photos used under Creative Commons from Marcin Wichary, zAppledot, vyusseem, Alex Barth, Alan Cleaver, jocelynsart, Richard Perry, taberandrew, eschipul, MrJamesAckerley