It appears that the identification of Rackstraw is down to "coded" sentences in a couple of letters?
So....how do investigators know what they key to the code is?
This sentence is making me shake my head:
“I was definitely shocked his name was in there. That’s what I was looking for and everything added up to that,” he said."
Gosh...that sounds an awful lot like Z researchers who try to solve the ciphers by plugging Z suspects' names into them, dividing the numerical value of each letter by 666, etc. If you're ALREADY looking for a guy's name in a cipher, you're going to do what you can to interpret your findings to tailor the conclusion you want to reach. Are we sure that the people who "solved" this really just didn't WANT Rackstraw's name to appear in the letter and thus allowed the desired outcome influence what they found? Are we even sure these letters are actually "coded" in some way? From reading a reprint of the letter, it just sounds like a guy taunting the cops. If there's a "code" in there, then I'd love to see how these guys were able to discern any kind of pattern in order to find the key to it. From where I stand their "solution" sounds like guesswork with a heapin' helpin' of wishful thinking sprinkled on top.
MELVILLE EATS BLUBBER