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>The letters that were sent in were titled "SHOOL KILLER" and the composition of them was cryptic, having some in Japanese and some in a Greek styled font
Inside of the one English letter was a cipher that was encoded using a specific set of text from the letter, and placed into a graph to be examined
When opening up the letter according to the instructions inside of them they told of a story about the use of this technology
Look at the text blocks and see what they say
I highlighted a couple of them for you