the most intriguing clue to me is the $2 bill found on chuck morgan...
too bad they cannot find the document it supposedly decodes

What about the case with Michael and Rochelle (i forgot their last names), there was an empty printing paper box left on top of the body of Rochelle.

i think i know which one you are talking about. was that the one where the psychic saw a dragon symbol and the cops thought someone was trying to kill the woman?

"cheap but will do". the segment was just shown recently.

I believe cheap but will do is the Whacker case.

Yes, "Cheap but will do" is what the "perpatrator" wrote on the walls at the Wacker house.