I'm not sure if I have all these facts right, but on Cold Case Files some time ago (I think this was the show), young girls had been abducted, raped, and found with the garrotte tied around their necks. I am not sure if the killer was caught, but at that time, I wondered if possibly there was some connection with this killer and Jonbenet's murder. What is this type of knot used for under normal circumstances? Maybe if they look into where this knot would be used most, it may provide a lead. From the picture, it looks like it may take some time to make unless you use these all the time. Please let me know your thoughts on this. This post is only my opinion.