Comment Extremely low quality "solution" (Score 5, Interesting) 29
A person with an unusual mind who was obsessively focused on this thing for quite a while - they label that as "autism" and suggests it gave him special powers to break the case.
There's another type of person with an unusual mind and tendency to obsessiveness, we generally call them "cranks". Are you sure we have a magical rain man and not a crank?
Margolis was a suspect for the Dahlia case, but he was cleared by the police due to having an alibi.
No non-cranks have suggested a link between that murder and the zodiac murders, since they're nothing like each other and also far removed in time.
That "Elisabeth" is the key to z13 is nonsense, since only a few of the ciphertext letters in z13 are even letters. Our "autist genius" had to give himself a lot of leeway to squeeze that interpretation in.
The most likely decoding of z13 is "Alfred E Neuman". That's the MAD magazine mascot. It's a joke. He didn't put his name in there, just like he didn't in any of the other ciphers. There's internal corroboration: the three first letters of the ciphertext are A E N - the initials of the solution.