On the afternoon of September 30th, 1991, an investigator in Wilkes-Barre, Pennsylvania walked carefully through a college chemistry lab – that was also a potential crime scene. The room was a complete mess, with construction debris all over the place and lab equipment strewn across the countertops. It was so cluttered that the investigator hardly knew where to begin. But then he noticed something laying on a nearby counter – it was a soiled rag with a handwritten note sitting next to it. And when he read the note, he gasped. Because he realized that he could be the next to die.