Translation: "He who walks in shadow". As you can see "e" is now "l", and "k" is "ɹ". He seems to switch it up a bit every other tweet.

This directly references the contents of the emails. On the 19th of October, he does not know the cause of this occurrence.

"Let the sediment settle until the bottom of the glass looks like coal dust. Leave it on the table. It's the same thing that took the color out of the rocks in the creek. It's the same thing that's making the neighbor's dog stop barking."

The email is sent on May 14, by a person who lives in the same neighborhood as Cain, using the same exact cipher, with minor differences.

I'm not sure what timeline the Twitter accounts follow, if the dates are not of importance or if they're meticulously planned in advance, but I'll take both scenarios into consideration: the email could either be sent by Cain himself, or by a third party who has probably come into contact with him in one way or another.

Cain frequently mentions having a Reddit account, but sadly I could not find it.

I compiled all his encrypted tweets (tweets presenting simple glitched text that can't be made any sense of were not included):

"smell, taste, touch, sound, sight, five walls. five months, five decades, five..."

Not sure if the glitched parts have any significance

"I see (?)e code it's bea-iful and it's bleedingbleedingbleeding -do (FVB) read my? I think I can rea(e)ch (FVB)" -in parantheses is the original text

I think (FVB) might mean "you" but that would break all conventions basically. If anyone has any other ideas, let me know in the comments.

"If I crane my head just right, I can see the edge of the- world;; but it's all scan lines and colors. They're burning into my vision. im looki- too deeply."

"yes, i went back, i wonder if something lik- the tuscan sword is buried there. --only explanation of why i feel so drawn to it. a mellage(?)… --one that was for me, and yet got lost."

This time its not mirrored and it's read from left to right. And the letter x makes its debut for the first time as "G".

This cipher is completely new! Also not mirrored

"Solus Cum Solo, In Loco Remtoro, Non Cogitabuntuo oraae Pater Noster.

the five sounds of christ. the five foolish virgins. four walls and a ceaing. or maybe four limbs and a head. we are all trapped in a pentagram of fesho.

i need fresh eyes. i need help."

There seem to be a few typos in the original, this is what I think i should be: " Solus cum solo, in loco remoto non cogitabuntur orare Pater Noster.

the five sounds of christ. the five foolish virgins. four walls and a ceasing. or maybe four limbs and a head. we are all trapped in a pentagram of flesh.

i need fresh eyes. i need help."

The latin phrase roughly translates to "Alone with the [One] Alone, in a remote place, they will not be thinking to pray the Our Father"

It is the title of Chapter 13, Book Eighth, Volume III of Les Misérables by Victor Hugo.

And another new cipher! This one is mirrored, read right to left.

"She used to say every secret is stone you're asking God to carry. I must be a mountain by now; The tonnage of it makes my bones feel like glass. I wonder how much pressure it'll take to finally turn me into light."

As of today (May 1st) those are all instances of Cain & the cipher.