There is no doubt, given the nature of the ransom note, that the killer was a student of crimes, both real , in books , and on the screen. This part of the profile has never fit Patsy, no one has ever identified her as ,knowing about "police tactics and countermeasures",or, having used phrases from ultra-violent crime materials. I suggested a while back that we should visit the archives of the serial killer reading room, to get an idea of how the minds of not only serials, but the wannabes work. The idea was nixed and the link erased. This crime was committed by a dark mind, not by a middle aged mommy. JMO