The fact that the killings - by some screwed up method - made a music reference piece - would explain the 'pattern' to the killer's method. Also confirmed 'serial killer' tendency, but hey, that wasn't as important at the moment.<br/><br/>So, pulling up references based on the musical notes, comparing the timelines for how long it took for a killing to occur, and she'd have a general idea of not only where it would be next, but when it would be, and if she were there on foot, she could figure out WHO it would be...<br/><br/>You could do quite a bit when your brain was the internet...<br/><br/>(SORRY IT TOOK SO LONG >.<)