Suzy, I suggest you go through some archives somewhere and read up on all the evidence that exonerates the Mr. & Mrs. Ramsey. Check Brytani's postings here, which list some of it. Whoever wrote the letter was a certified nut, but even there, some handwriting experts have said it wasn't Patsy's handwriting.
Gosh, I'd hate to be a parent who had a child murdered in my home--all it takes is a really bad investigation and a media firestorm to railroad the parents, letting the real killer go free. Most people just don't bother to research a case--so if the media says they're guilty, by golly, they're guilty, according to them.
Geesh....the PAPER that the note was written on was from INSIDE the house...I guess that doesn't matter. Then they get an attorney and don't cooperate with the POLICE???? double geesh.