I've always thought, just my opinion, that the ransom note was written before the murder...that the killer was in the basement when the Ramsey's returned from the party.....he could have sat there for hours writing and waiting....then the kidnapping went wrong, somehow, and he murdered her......but I don't think this is the guy.
exactly right - the note was written first - it was supposed to be a kidnapping, but it went bad.
on the flipside - if the killer was someone in the household, then the note was staged simply as a diversion to make people believe someone else was inside the house. how do you make a convincing false claim that a stranger was inside your house? you say "look, they left a note". what else can you do to stage that?
BUT, they have to have one taken here with their witnesses and experts and lab certifications.
That NOTE matches this guy in many. many ways.