followed it to Gacys house. Upon learning Gacys name, he immediately filed charges of sexual assault. Finally, after intense investigation and lab work into some of the items confiscated by police from Gacys house, they came up with critical evidence against Gacy. One of the rings found at Gacys house belonged to another teenager who had disappeared a year earlier named John Szyc. They also discovered that three former employees of Gacy had also mysteriously disappeared. Furthermore, the receipt for the roll of film that was found at Gacys home had belonged to a co-worker of Robert Piest who had given it to Robert the day of his disappearance. With the new information, investigators began to realize the enormity of the case that was unfolding before them.

It wasnot long before investigators were back searching Gacys house. Gacy had finally confessed to police that he did kill someone but said it had been in self-defense. He said that he had buried the body underneath his garage. Gacy told police where they could find the body and police marked the gravesite in the garage, but they did not immediately begin digging. They first wanted to search the crawl space under Gacys house. It was not long before they discovered a suspicious mound of earth. Minutes after digging into the suspicious mound, investigators found the remains of a body. That evening, Dr. Robert Stein, Cook County Medical Examiner, was called in to help with the investigation. Upon his arrival at Gacys house, he immediately recognized a familiar odor