This letter is weird.
The grammar and spelling were SO bad that it seemed fake. I mean, who writes and spells this bad, if not intentionally? The guy can spell "penetrate", but can't spell vagina or high? Whatev. Not buying it.
It just seemed odd, also, that this letter addressed most of the issues in this case: ie)duct tape, laundry hamper at the house, the forged checks, the waiting 31 days, even the testosterone in the gatorade bottle (o-town was a steroid user), chloroform in trunk. It's actually quite clever in that regard. I honestly wonder who is behind this letter. There's no way an obsessed, barely literate prisoner, is going to pour over thousands of documents and news reports to then concoct some plot that includes all these elements. No way. I'd say, someone in this guy's position would be more likely to spend his time drawing pictures of casey's virgina. Just sayin'