Criminal Profiler Roger L. Depue, Chief of the FBI's Behavioural Science Unit, at Quantico, who on retirement, went onto setup an elite forensics company The Academy Group, was requested by Bert Brown, who was acting as a consultant on behalf of Boulder DA's office, to review and offer an opinion on JonBenet's homicide, specifically with respect to the ransom note. The following is a summary account.
Roger was sent a photocopy of the two and half page note, written on a legal pad. The question asked , was what type of person might have written it?
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In two decades of analyzing written crime scene evidence I'd never seen a two-and-a-half-page, hand printed ransom note. Never. Thats how unusual it was.
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Summary:
There was certainly a lot of crime scene information, other than than this note, to process. We know for example, that the killer apparently took the time to write a practise note which began: "dear Mr. and Mrs. Ramsey.". But just sticking to the written material given to me, I could tell a lot. My analysis indicated that, operationally, the note was prepared without much planning, and contained inconsistencies not expected in a bona fide kidnap demand note; psychologically the perpetrator was sane and stable, but distressed, and of low criminal compotence. Furthermore, my profile of the writer revealed someone who was in all likelihood white, female, Southern, well educated, middle-aged, and who knew John Ramsey, his personal life, and business, quite well.
A similar account and profile was transmitted to the DA's office via Bert Brown.