and she asked rob if she could borrow his coat. and just before she did that, she processed a roll of film and took the film receipt and put it in the jacket of rob piest s coat. sullivan: rob eventually borrowed his coat back. jackson: how would that photo receipt that was in rob piest s jacket pocket have ended up in gacy s house, unless the two of them crossed paths that night? so now police have the proof and the evidence they need to get that search warrant to go back into gacy s house to examine that crawl space. amirante: so maybe six hours, he talked continuously, describing every murder. he remembered every single detail about every single murder.