ZODIAC CIPHERS
Richard Grinell, Coventry, England
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ZODIAC DNA-DEAD OR ALIVE

11/12/2021

 
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According to Alan Keel, Criminalist at the San Francisco Police Department, San Francisco, California from 1996 to 1999, he "revealed that there were two letters in possession of the department that, in contrast to the "true" Zodiac letters, had abundant saliva and DNA-containing oral epithelial cells on them, that DNA was easily extracted from these two letters, and that the DNA extracted from these two letters matched between them. These two letters were considered forgeries, since the "true" Zodiac verifiable letters had not been licked by the sender". According to Zodiac researcher, Mike Rodelli, Alan Keel had "analyzed two letters, one of which is the 1978 'forgery', and finds that this letter and one of the 1974 letters are loaded with saliva and cells. He then easily extracts DNA from both of these letters using the more primitive DNA technology of that time and finds that the DNA matches between those two letters, thus proving that one person sent both". 

In Mike Rodelli's latest book In the Shadow of Mount Diablo he makes it obvious that he believes the SLA and Red Phantom letters are communications mailed by the Zodiac Killer. He is also fairly confident that the true Zodiac letters were not licked by the sender. This being the case, then he must accept that the SLA and Red Phantom letters should have no oral epithelial cells on them. The Badlands postcard was pre-stamped, so provided no opportunity for reliable DNA testing. Therefore, the only possible match between the DNA from the 1978 letter and one of the 1974 letters, using Mike Rodelli's thought process, had to be between the 1978 letter and the Exorcist letter. If Alan Keel's claimed statement is correct, then I agree. The problem however, is that the Exorcist letter is almost certainly genuine Zodiac material because of the comparison between its envelope and the unpublished envelopes from April 1970 (which hadn't been published by January 29th 1974). So, if the Exorcist letter is genuine, so is the 1978 letter.        

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If the SLA and Red Phantom letters had been tested and had hypothetically produced a full DNA sample, then Mike would probably agree that the DNA on both letters should have matched (and therefore was secreted from Zodiac). In fact, they couldn't have been tested to produce a full DNA sample, because if they had been authored by the same individual, the 1978 letter would have matched at least two 1974 letters, not one (as apparently claimed by Alan Keel). This is apparent in the DNA chart, that doesn't attribute anything to the Red Phantom letter in comments, and doesn't even include the SLA letter at all. If correct, then the statements of Alan Keel implies that both the 1978 and Exorcist letters have a full DNA profile, which can then be stored and entered into CODIS when required, or used in the science of genetic genealogy. Unless this DNA "print out" has been mislaid or thrown away (which would seem inconceivable), then the profile of these communications can be used, much like Joseph James DeAngelo Jr, to search for any genealogical links that may be relevant to a killer operating in the Bay Area of Northern California.  

FOLLOW UP ARTICLES:
THE GENETIC IDENTITY OF THE KILLER 
    WE MAY ALREADY HAVE ZODIAC DNA

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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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